DAVID A. SUMMERS
University of Missouri Curators' Professor of Mining Engineering
Adjunct Professor of Nuclear Engineering
Director, Rock Mechanics and Explosives Research Center
Director, High Pressure Waterjet Laboratory
University of Missouri-Rolla

ACADEMIC DEGREES:
B.S. (Class I), Mining Engineering, The University of Leeds,
      Leeds, England, 1965
Ph.D., Mining Engineering, The University of Leeds,
      Leeds, England, 1968

PROFESSIONAL AFFILIATIONS:

Russian Academy of Mining Science (elected Foreign Member - 2001)
Society for Mining, Metallurgy and Exploration, Inc. (SME)
Institution of Mining Engineers (elected Fellow, 1980)
North of England Institute of Mining Engineers (elected Fellow, 1980)
European Engineer
Chartered Engineer (1970)
American Society of Mechanical Engineers
Waterjet Technology Association
    Director (1983 -)
    Chairman - Standards Committee (1983 -1995)
    Vice-President (1983 - 1985)
    President (1985 - 1987)
    Chairman of the Board (1987 - 1991)
Institute of Shaft Drilling Technology
International Society of Water Jet Technology
    Director & Vice President (1990 -1998)
    President (1998-date)
British Hydromechanics Research Association (BHR Group) - Honorary Member, paper reviewer, Meeting Organizing
Committee member, and Technical Advisory Committee member for the 11th, 12th and 13th International Symposiums on Jet
Cutting Technology.

HONORS:
G.C. Greenwell Bronze Medal, 1978
MASUA Lecturer, 1978-79
MSM-Missouri S&T Alumni Association
      Alumni Merit Award for Exemplary Research
NASA Certificate of Recognition (1980)
Named University Curators' Professor (1980)
Elected Honorary Member - British Hydromechanics Research Association (1982)
Complementary Membership - Cleaning Equipment Manufacturers' Association (1983)
Panel of Assessors, Australian Research Grants Scheme
Who's Who in Technology Today
Who's Who in the World
Achievement Award 1st Chinese Waterjet Association, Beijing 1987
Safety Award--Presented at the 7th American Waterjet Conference, Seattle, WA, 1993.
The Rock Mechanics Award--Coal Division and Mining & Exploration Division, February, 1994.
Overseas Award, The Institution of Mining Engineers, 1993.
Elected Member of the Russian Academy of Mining Science, 1996.
Pioneer Award s Waterjet Technology Association 1997.  Received at the 9th American Waterjet Conference,
      Dearborn, MI.

PROFESSIONAL EXPERIENCE:
1961-1962, Student Apprentice, National Coal Board, Northumberland, England. Experience in surface workshop and administration facilities at a coal mine and six months underground on haulage of supplies to the mine face, work on a longwall coal face, and ground support for the face and entries.

1963 (summer), National Coal Board, Kent, England.  Experience on a power-loading longwall face in a coal mine.

1964 (summer), Praktikant (Student Apprentice) with the Bolidens, G.B., Adakgruvan, Sweden. Experience in mine surveying
and rock extraction in a cut and fill sublevel stooping system.

1965 (summer), Forestry Commission, Southern Scotland (attached to the Surveyor). Surveying and mapping future road development in a National Forest.

1968-1974, Assistant Professor of Mining Engineering and Senior Research Investigator in Rock Mechanics and Explosives
Research Center, University of Missouri-Rolla, Rolla, Missouri. Research in the measurement of material surface energy and
the excavation of rock by a high pressure waterjet. Lecturer on rock mechanics and strata control.

Lectured in Engineering Mechanics (Materials Testing Laboratory 1968-69, Dynamics, 1969) and Mining Engineering (Rock
Mechanics II, 1969 to 1975; Strata Control, 1973 to 1988; Mine Power & Drainage 1981; Underground Mining, 1984; Coal
Mine Development 1991).

Instructor in Rock Mechanics Short Course (1969, 1970, 1971, 1972, 1973).

Instructor to Peabody Coal Company on Underground Coal Mining, Spring 1973.

Instructor in Waterjet Short Course Rolla, MO 1983, London UK 1983.

1976-77, Associate Professor of Mining Engineering and Director, Rock Mechanics and Explosives Research.

1977-80, Professor of Mining Engineering and Director, Rock Mechanics and Explosives Research.

1980-1984, University of Missouri Curators' Professor of Mining Engineering and Director, Rock Mechanics and Explosives
Research.

Participant Impact Cleaning Study Group, Chemical Systems Laboratory, US ARRADCOM, 1980.

Participant, USAF Contamination Control Technology Workshop, Columbus, Ohio, June, 1983.

1984-date, University of Missouri Curators' Professor of Mining Engineering and Director, High Pressure Waterjet
Laboratory.

Fall 1987 Visiting Lecturer, University of Queensland, Brisbane, Australia

1989-, Interim Director, Rock Mechanics and Explosives Research Center.

1996, Director, Rock Mechanics and Explosives Research Center.

INVITED LECTURES AND SHORT COURSES:
Dr Summers has taught short courses and given invited lectures at the following Universities:
     University of Leeds, Leeds, UK (1977)
     University of Dayton, Dayton, Ohio (1977)
     University of Wroclaw, Poland (1978)
     University of Aachen, FDR (1982)
     Morehead State University, Morehead, Kentucky (1983)
     University of Queensland, Brisbane, Australia (1987)
     Chinese Institute of Mining, Xu Zhou, PRC (1987)
     New Jersey Institute of Technology, Newark, NJ (1988)
     Massachusetts Institute of Technology, Cambridge, MS (1988)
     Tohoku University, Sendai, Japan (1988)
     University of Cagliari, Sardinia, Italy (1989, 1991)
     Society of Manufacturing Engineers, Clinic Chair (1987, 1988, twice in 1989, 1990,1991)
     1st Asian Conference on Jetting Technology, Singapore (1991)

RELEVANT PUBLICATIONS:

   NOTICE:  Some of the following links may not be available at this time (11/03/02) but will be at a later date.
 

Dr. Summers has published over 260 articles, written one book and holds five patents relating to his research interests and that of his group.

1. Summers, D.A., "Copper Mining in the Adakgruvan Mine of North Sweden",S Journal of Leeds University, 41, pp. 49-55,
1966.

2. Summers, D.A., "Disintegration of Rock by High Pressure Jets", Ph.D. Thesis, University of Leeds, 1968.

3. Clark, G.B., Haas, C.J., Brown, J.B., and Summers, D.A., "Rock Properties Related to Rapid Excavation", Department of
Transportation, Contract No. 3-0143, March, 1969.

4. Brook, N. and Summers, D.A., "The Penetration of Rock by High Speed Waterjets", Intl. Journal Rock Mechanics and
Mining Science, May, 1969.

5. Clark, G.B., Haas, C.J., Brown, J.B., and Summers, D.A., "Hypervelocity Impact on Rock", 11th Symposium on Rock
Mechanics, Berkeley, California, June, 1969.

5a.  Clark, G.B., and Summers, D.A., "Water Jet Penetration into Rock, first THEMIS report" ,on  contract  DACAT45-69-C-0087, November 1970.

6. Summers, D.A., et al., "A Comparison of Methods for the Determination of Surface Energy", 12th Symposium on Rock
Mechanics, University of Missouri-Rolla, November, 1970.

7. Summers, D.A., "The Waterjet Cutting of Frozen Gravel", Report on DACA-89-7l-l452, U. S. Army Cold Regions
Research Engineering Laboratory, l97l.

8. Summers, D.A. and Henry, R.L.,"A Comparison of Waterjet Cutting Efficiency", With and Without Mechanical
Assistance", SPE 3533, Fall Meeting, l97l, New Orleans.

9. Summers, D.A., "Waterjet Coal Mining Related to the Mining Environment," Conference on Underground Mining
Environment, Rolla, Missouri, October, l97l,.

10. Summers, D.A. and Henry, R.L.," The Effect of Change in Energy and Momentum Levels on the Rock Removal in Indiana Limestone,S the 1st International Symposium on Jet Cutting Technology ", Coventry, England, April, l972.

11. Summers, D.A., "Correlation of Continuous Jet Performance with Some Rock and Jet Properties", presented at the l4th
Symposium of Rock Mechanics, Penn State University, University Park, Pennsylvania, June l2-l4, l972.

12. Summers, D.A. and Henry, R.L., "Waterjet Cutting of Sedimentary Rock", Journal of Petroleum Tech., July, l972.
                    NOTE:  this paper is sensible the same as paper #8 of this list therefore this link will take you to paper #8

13. Summers, D.A., "The Use of High Pressure Waterjets in Mining, National Forum on the Availability of New Technology
to Industry from American Universities and Technical Institutes", Chicago, April 3, l973.

14. Summers, D.A. and Peters, J., "The Effect of Rock Anisotropy on the Excavation Rate in Barre Granite", Second
International Symposium on Jet Cutting Technology, Cambridge, U.K., paper H5, April, l974.

15. Summers, D.A. and Peters, J., "Preliminary Experimentation of Coal Cutting in the Pressure Range 500-2000
Atmospheres", Second International Symposium on Jet Cutting Technology, Cambridge, U.K., paper H2, April, l974.

16. Ash, R.L. and Summers, D.A., "Rock Breakage Characteristics of (l) Small Diameter Confined Explosive Column
Charges, and (2) Water Jets," Final Report on U.S.B.M. Contract USDI-G0l22ll7.

17. Summers, D.A. and Zakin, J., "Impact Erosion by Jets of Dilute Polymer Solutions," Nature (Lond) 247 January 25, l974,
pp. 243-4.

18. Summers, D.A., Aughenbaugh, N., and Park, D.W., "The Application of Laser Holographic Interferometry to Analysis of
Ground Movement Above Underground Openings," Proc. 20th Int. Inst. Symp., Albuquerque, New Mexico, 2l-23 May,
l973, ISA ASI 7423l, pp. l55-l64.

19. Summers, D.A., et al., "Experimentation Leading to the Design of a Longwall Waterjet Mining Machine," Final Report on
U.S. Bureau of Mines Contract H0232064, November, l974.

20. Summers, D.A. and Zakin, J.L., "An Investigation of Penetration of High Speed Fluid Jets Into Various Soil and Material
Types," Final Report on USA MERDC Contract DAAK02-C-0006.

21. Summers, D.A. and Zakin, J.L., "The Effect of Fluid Viscosity and Polymer Additives on High Velocity Jet Structure and
Cutting Ability," Paper l02H, 67th Annual Meeting AICHE, December, l974, Washington, D.C.

22. Summers, D.A., "High Pressure Waterjet Erosion and Rock Breakage," 30th Annual Petroleum Mechanical Engineering
Conference, ASME, Tulsa, Oklahoma, September, l975.

23. Summers, D.A.," The Application of Waterjets in Coal Mining, "Proc. of the 2nd Missouri S&T/MEC Conference on Energy,
Rolla, Missouri, October 8-ll, l975.

24. Summers, D.A., "The Application of Waterjets for Underground Excavation," Vail Conference on Research in Excavation
Technology, Vail, Colorado, October 2l-24, l975.

25. Summers, D.A., "Experimentation in the Field of Waterjet Cutting," Research Workshop on the Application of High
Pressure Waterjet Cutting Technology, Rolla, Missouri, November loll, l975.

25a. Summers, D.A. and Bushnell, D.J., Environmental Effects on a High Pressure Jet Drill, 3lst Annual Meeting of the Petroleum Mechanical Engineering Conference of ASME, Mexico City, Mexico, September, l976.

26. Mazurkiewicz, M. and Summers, D.A., "The Accumulation Phenomena in the Zone of Impact of a High Speed Waterjet,"
Proc. of the 3rd Brazilian Congress of Mechanical Engineering, Rio de Janeiro, December, l976.

27. Summers, D.A. and Zakin, J.L., "The Effect of Viscoelastic Additives on Jet Structure," Proc. of 3rd International
Symposium on Jet Cutting Technology, Chicago, Illinois, May 11-13, l976.

28. Summers, D.A. and Mazurkiewicz, M., "The Effect of Jet Traverse Velocity on the Cutting of Coal and Jet Structure",
Proc. of 3rd International Symposium in Jet Cutting Technology, Chicago, Illinois, May 11-13, l976.

29. Summers, D.A. and Bushnell, D.J., "Preliminary Experimentation of the Design of the Waterjet Drilling Devices", Proc. of
3rd International Symposium on Jet Cutting Technology, Chicago, Illinois, May, l976.

30. Summers, D.A. and Barker, C.R., "The Development of a Waterjet Machine for Coal Extraction", 3rd Rapid Excavation
and Tunneling Conference, Las Vegas, Nevada, June, l976.

31. Heincker, W.R., Eck, R.S., Summers, D.A., and Lehnhoff, T.F., "A Hydraulic Longwall Mining Design-Concept for the
Future", World Coal, Vol. 2, No. 2, February, l976, pp. 23-26.

32. Bushnell, D.J., Barker, C.R., and Summers, D.A., "High-Pressure Hydraulic Powers Waterjet Coal Miner, Hydraulics &
Pneumatics", Vol. 29, No. 4, April, l976, pp. 69-7l.

33. Summers, D.A., "Prototypes for Jet Cutting, Tunnels & Tunneling", Vol. 8, No. 5, July-August, l976, p. 6l.

34. Summers, D.A., "High Velocity Waterjets as a Rock Fragmentation Device, Fragmentation Panel", l7th Symposium, on
Rock Mechanics, Snowbird, Utah, August, l976.

35. Summers, D.A.., "Veenhuizen, S.D., Kirby, M.J., and Cheung, J.B., Development of a System for High Speed Drilling of
Small Diameter Roof Bolt Holes," Phase I Report, Operational Parameters and Preliminary Design Concepts, Flow Research,
Inc.

36. Summers, D.A., Bushnell, D.J., (eds.), "Proceedings of the Workshop on the Application of High Pressure Waterjet
Cutting Technology," Rolla, Missouri, November, l975.

37. Heincker, W.R., Eck, R.S., Summers, D.A., Lehnhoff, T.F., "Design of a Hydraulic Longwall Coal Mining Machine,"
Preprint No. 76-WA/DE-2, American Society of Mechanical Engineers Winter Annual Meeting, New York, New York,
December, l976.

38. Summers, D.A., Hydraulic Mining Research in Missouri, Seminar National Coal Board Research and Development
Establishment, Bretby, England; January 6, l977.

39. Summers, D.A., "Developments in Waterjet Mining," Seminar, University of Leeds, England, January l8, l977.

40. Summers, D.A., Barker, C.R., and Mazurkiewicz, M., "Experimentation in Hydraulic Coal Mining," l977 AIME Annual
Meeting, Atlanta, Georgia, March l8, l977.

41. Summers, D.A., "Progress of Waterjets in Mining," AIMMPE, Viburnum, Missouri, March l8, l977.

42. Summers, D.A., "Waterjet Cutting - A State of the Art Review," Seminar, University of Dayton, Dayton, Ohio, March 23,
l977.

43. Summers, D.A., "Innovation in Extractive Mining," Seminar, Southern Illinois University, Carbondale, Illinois, April 20,
l977.

44. Barker, C.R. and Summers, D.A., "Consideration in the Development of a Waterjet Cutting Head," Proc. l8th
Symposium, Rock Mechanics, Keystone, Colorado, May, l977.

45. Summers, D.A. and Lehnhoff, T.F., "Waterjet Drilling in Sandstone and Granite," Proc. l8th Symposium, Rock
Mechanics, Keystone, Colorado, May, l977.

46. Park, D.W., Summers, D.A. and Aughenbaugh, N.B., "Model Studies of Subsidence and Ground Movement Using Laser
Holographic Interferometry," Int. Jl. Rock Mechanics & Mining Sciences Vol. l4, No. 5/6, November, l977, pp. 235-245.

47. Summers, D.A., et al., "Hydromechanical Drilling of Holes Larger Than One Inch in Diameter," l977 ETC Conference,
Sponsored by Petroleum Division of ASME, Houston, Texas, September, l977.

48. Mazurkiewicz, M., Barker, C.R., and Summers, D.A., "Adaptation of Jet Accumulation Techniques for Enhanced Rock
Cutting," ASTM Symposium on Erosion, Vail, Colorado, October 24-25, l977.

49. Summers, W.A. and Summers, D.A., "The Application of High Pressure Waterjets to Longwall Mining," North of
England Institute of Mining Engineers, April 6, l978.

50. Summers, D.A., "Mining - Something Old, Something New, Missouri Arts Council Lecture," November l5, l977.

50a. Barker, C.R. and Summers, D.A., "Surface Trials of the Hydrominer," 4th International
Symposium on Jet Cutting Technology, Canterbury, England, April l2-l4, l978.

51. Barker, C.R., Summers, D.A., and Selberg, B.P., "Can Nozzle Design be Effectively Improved for Drilling Purposes,"
Energy Technology Conference and Exhibition, ASME, Houston, Texas, November 5-8, l978.

52. Summers, D.A., Lehnhoff, T.F., and Weakly, L.A., "Development of a Water Jet Drilling System and Preliminary
Evaluations of its Performance in a Stress Situation Underground," 4th International Symposium on Jet Cutting Technology,
Canterbury, England, April, l978.

53. Summers, D.A. and Weakly, L.A., "The Effect of Stress on Waterjet Performance, Proc. l9th Symposium on Rock
Mechanics," Lake Tahoe, Nevada, May, l978.

54. Scott, P.R. and Summers, D.A., "Cavitation and the Cutting of Rock," l978 Cavitation and Polyphase Flow Forum, Ft.
Collins, Colorado, June, l978.

55. Summers, D.A., "Practical Aspects of Erosion Processes," Chapter 8 of Materials Erosion, ed. C. Preece, Academic
Press, l979.

56. Summers, D.A. and Barker, C.R., Zastosowanie Wysoko Cis' Nieniowej Strugi WodneJ do Urabiania Skol, Poltegor,
Wroclaw, Poland, April, l978.

57. Summers, D.A., Barker, C.R., and Mazurkiewicz, M., 'Testing of the Prototype Hydrominer in a Surface Coal Seam,"
Mining Eng., pp. 379, April, l978.

58. Summers, D.A. and El-Saie, A.A., "Progress in the Waterjet Assisted Drilling of Rock," Geothermal Resources Council,
Annual Meeting, Hilo, Hawaii, July, l978.

59. Summers, D.A., The Use of High Pressure Waterjets in the Mining Industry, Colliery Guardian, October, l978.

60. Summers, D.A., Barker, C.R., and Keith, H.D., "Waterjet Drilling Horizontal Holes in Coal," Society of Mining Engineers
of AIME, l979 Annual Meeting, New Orleans, Louisiana, February l8-22, l979.

61. Summers, D.A., Barker, C.R., and Keith, H.D., "The Development of a Round-the-Corner Drill," 20th U.S. Rock
Mechanics Symposium, Austin, Texas, June 3-6, l979.

62. Summers, D.A., "New Techniques in Loosening Technology," Coal Technology Seminar, Ohio State University, March 2,
l979.

63. Summers, D.A., Barker, C.R., and Mazurkiewicz, M., Wspolczesne Tendencjew Hydraulicznym Urabianiu Wegla w
Stanach Zjednoczonych, Gornictwo Odkrywkowe, Rocznik XX, Nr l-2 (l23-l24), pp. l3-l6, l978.

64. Summers, D.A., "The Evolving Role of Water Jets Relative to Energy," Mo. Acad. Sci. Meeting, Jefferson City, Missouri,
April 27-28, l979.

65. Summers, D.A., The Potential Application of Waterjets in Geotechnical Excavation, 5th International Conference on
Erosion by Liquid and Solid Impact, Cambridge, U.K. 3-5 September, l979.

66. Summers, D.A., Waterjet Development in In-Situ Coal Processes,S Seminar, Morgantown Energy Technology Center,
March l4, l979.

67. Summers, D.A. and Barker, C.R., A Rapid Access System for In-Situ Development of Coal Seam Energy, Energy
Technology Conf., New Orleans, Louisiana, February, l980.

68. Summers, D.A., El-Saie, A.A., and Owen, K., A Contrast Between Sand, Water, and Cavitation Erosion of Rock,
Wear, 60, (l), pp. 229-236, January, l980.

69. Summers, D.A., The Emperor has no Clothes, l5th Annual Meeting ASEE, Bartlesville, Oklahoma, March, l980.

70. Summers, D.A., Die Anwendung von Hockdruckwasserstrahlen im Bergbau, Gluckauf Forschungshefte, 4l (l),
February, l980.

71. Summers, D.A. and Sebastian, Z., Cavitation Erosion Testing and Waterjet Reaming, Geothermal Drilling and
Completions Panel Review, Washington, D.C., December, l979.

72. Summers, D.A., Potential Advantages to Waterjet Drilling for Use in In-Situ Coal Gasification Processes, presented at
the Energy Technology Conference and Exhibition, New Orleans, Louisiana, February, l980, ASME Preprint 80-PET-76.

73. Summers, D.A., The Evolving Energy Crisis and the Role of Waterjets, AEG Meeting, Rolla, MO, March, l980.

74. Green, B., Summers, D.A., and Aughenbaugh, N.B., Design Innovations for a New Minerals Engineering Building,
National Tech. Conference, Earth Sheltered Building Design Innovations, Oklahoma State University, April, l980.

75. Summers, D.A., The Use of Polymers with High Pressure Jet Systems, Nalco Chemicals Seminar, March, l980,
Chicago, IL.

76. Summers, D.A. and Sebastian, Z., "Considerations in the Use of Waterjets to Enlarge Deep
Submerged Cavities," 5th Int. Jet Cutting Symp., Hanover, W. Germany, June, l980.

76a.Summers, D.A. and Barker, C.R., "The Use of Waterjets to Detect the Coal: Shale Interface in Automatically Steering Mining Equipment," 5th Int. Symp. Jet Cutting Tech., Hanover, W. Germany, June, l980.

77. Summers, D.A., Aspects of Waterjet Usage for Physical Decontamination, Symp. on Toxic Substance Control:
Decontamination, Columbus, Ohio, April, l980.

77a.  Summers, D.A., and Sebastian, Z., "The Reaming Out of Geothermal Excavations," Final Report on Contract 13-3246,
for Sandia Laboratories, April, 1980

78. Akers, C.A., Bless, S.J., McKay, R., Summers, D.A., and Zakin, J.L., Decontamination with High Pressure Water,
Symposium on Toxic Substance Control: Decontamination, Columbus, Ohio, April, l980.

79. Summers, D.A.," Waterjets - An Answer to Noise and Dust," 70th Annual Convention, Mine Inspectors Institute of
America, St. Louis, Missouri, June, l980.

80. Bless, S.J., Akers, C.A., McKay, R.A., Summers, D.A., Zakin, J.L., Rapid Vehicle Decontamination by Impact
Cleaning, Final Report on Agreement No. DO1331, for Chemical Systems Laboratory, University of Dayton, Ohio, July,
1980

81. Summers, D.A., The Gloom Gets Doomier, 7th Annual Missouri S&T-DNA Conference on Energy, Rolla, Missouri, October
l5, l980.

82. Green, B.H. and Summers, D.A., Missouri S&T Minerals Building: An Innovative Approach to the Construction of Underground
Buildings, 7th Annual Missouri S&T-DNA Conference on Energy, Rolla, Missouri, October l5, l980.

83. Sebastian, Z. and Summers, D.A., The Use of the Lichtarowicz Cell as a Cavitation Testing Device, ASME Cavitation
Erosion Symposium, June, l98l.

84. Summers, D.A. and Barker, C.R., Potential Advantages to Waterjet Drilling for Use in In-Situ Coal Gasification
Processes,S Journal Energy Resources Technology, June, l98l.

85. Summers, D.A., The Advantages of a Waterjet Reamer, Proc. 1st U.S. Waterjet Symposium, Golden, Colorado, April,
l98l.

86. Summers, D.A. and Mazurkiewicz, M., "The Further Development of a Cavitation Test Cell", Proc. 1st U.S. Waterjet
Symposium, Golden, Colorado, April, l98l.

87. Summers, D.A., A Review of Jet Cleaning Practices, Seminar on the Waterjet State-of-the-Art, Proc. 1st U.S. Waterjet
Symposium, Golden, Colorado, April, l98l.

88. Barker, C.R. and Summers, D.A., The Development of a Longwall Waterjet Mining Machine, (Extension), U.S. Bureau
of Mines, Contract Number DOE DE AC0l 75ET, September, l98l.

89.Summers, D.A., Decontamination Nozzle Optimization Study, U.S. Department of Army, Chemical Systems Laboratory
Contractor Report Number ARCSL-CR-8l080 on Contract Number DAAKll 80 C 006l, November, l98l.

90. Summers, D.A., Waterjets - the Technology of the '80's, Seminar, Jet Propulsion Laboratory, Pasadena, California,
January, l982.

91. Summers, D.A. and Raether, R., Comparative Use of Intermediate Pressure Waterjets for Slotting and Removing
Concrete, BHRA Fluid Engineering, 6th International Symposium on Jet Cutting Technology, Guildford, Surrey, England,
April, l982.

92. Summers, D.A.,"The Effectiveness of Waterjet Sprays in Cleaning, and the Mechanism of Their Disintegration", BHRA
Fluid Engineering, 6th International Symposium on Jet Cutting Technology, Guildford, Surrey, England, April, l982.

93. Mazurkiewicz, M. and Summers, D.A., The Enhancement of Cavitation Damage, and its Use in Rock Disintegration,
BHRA Fluid Engineering, 6th International Symposium on Jet Cutting Technology, Guildford, Surrey, England, April, l982.

94. Summers, D.A., The Commercial Development of Waterjet Coal Mining Machines, Conference on Waterjet
Technology, West Virginia University, April, l982.

95. Summers, D.A., Innovations in Waterjet Drilling Technology, Conference on Waterjet Technology, West Virginia
University, April, l982.

96. Summers, D.A., Barker, C.R., and Keith, H.D., Method and Apparatus for Drilling Horizontal Holes in Geological
Structures from a Vertical Bore, ,U.S. Patent 4,3l7,492, May, l982.

100. Summers, D.A. and McGroarty, S.J., The Mechanism, and Some Parameters Controlling, the Waterjet Cutting of
Rock, Proc. 23rd U.S. Symposium on Rock Mechanics, Berkeley, California, August, l982.

101. Summers, D.A. and Worsey, P.N., High Pressure Washout Test, Final Report on Contract ONR
NOO164-82-C-0120, October, 1982.

102. Summers, D.A., "Considerations in the Comparison of Cavitating and Plain Waterjets," 2nd U.S. Waterjet Conference,
Rolla, Missouri, May, l983.

103. Raether, R.J., Robison, R.G., and Summers, D.A., "Use of High Pressure Waterjets for Cutting Granite," 2nd U.S.
Water Jet Conference, Rolla, Missouri, May, l983.

104. Summers, D.A., and Hubbard, P.J., Waterjet Impact Reactions, Proceedings of a Waterjet Conference, Rolla,
Missouri, June, l983.

105. Summers, D.A., "The Volume Factor in Cavitation Erosion", Proc. 6th Int. Conference on Erosion by Liquid and Solid
Impact, Cambridge, U.K., September, l983.

106. Summers, D.A., Mazurkiewicz, M., Marchello, J., Wollard, J., and Senne, J., The Carving of Stonehenge IV, Proc.
6th Int. Conference on Erosion by Liquid and Solid Impact, Cambridge, U.K., September, l983 (for presentation only).

107. Summers, D.A. and Worsey, P.N., "The Use of High Pressure Waterjets to Wash out Explosives", Proc. 6th Int.
Conference on Erosion by Liquid and Solid Impact, Cambridge, U.K., September, l983.

108. Summers, D.A., Technological Advances in Waterjet Equipment, Seminar at Morehead State University, Morehead,
Kentucky, September, l983.

109. Summers, D.A., Tyler, L.J., and Blaine, J.G., The Contour Cutting Mechanisms as a Means of Improving Underground
Stability, accepted 2nd Int. Conference on Stability in Underground Mining, September, l983.

110. Summers, D.A., Everyone Gets Nailed, Area l4 and Missouri West Division Winner, Humorous Speech Contest,
Toastmasters' International, September and October, l983.

111. Summers, D.A., How High is High?, Annual CEMA Meeting, Kansas City, Missouri, October, l983.

112. Summers, D.A., The Rapid Excavation and Tunneling Conference - A Review, accepted for publication, Civil
Engineering Magazine, October, l983.

113. Robertson, R., Summers, D.A., Worsey, P.N., and Short, J., The Use of High Pressure Waterjets to Wash Out
Explosives,S ADPA Protechnics and Explosives Applications Section Meeting, New Orleans, Louisiana, October, l983.

114. Summers, D.A., The RMERC Project Budget Template, Icon, V l, N 2, pp. 7-ll, October, l983.

115. Summers, D.A., The Waterjet Cutting of Concrete, Seminar to FHA/MHD, Jefferson City, 30 January, l984.

116. Summers, D.A., The Creation of Stonehenge IV, Kiwanis Club, Rolla, Missouri, January l0, l984.

117. Summers, D.A., The Use of LisaCalc for Experimental Analysis, accepted for publication Icon, January, l984.

118. Summers, D.A., and Haston, F. (ed.), Proceedings of the 2nd U.S. Waterjet Conference, Rolla, MO, January, l984.

118a. Summers D.A. Liquid Spray/Jet Decontamination; Mechanisms of Surface Interactions,
a Report under subcontract to Research Triangle Institute, April, 1984.

119. Worsey, P.N., and Summers, D.A., High Impact Velocity Testing of PBX Explosive,
A Progress Report on Contract No. NOO164-83-C-0110, Naval Weapons Support
Center, Crane Ind., May, 1984.

120. Summers, D.A., Tyler, L.J., and Blaine, J.G., The Growth of a Wombat, 7th Int. Symposium on Jet Cutting
Technology, Ottawa, Canada, June, l984.

121. Summers, D.A., The Waterjet Plow, Industry Meeting on Water-jet Assisted Cutting, U.S. Dept of Interior Bureau of
Mines Technology Transfer Meeting, June 21, 1984, Pittsburgh, PA.

122. Summers, D.A., The Final Frontier - Bringing Science Fiction Back to Earth, Science Fiction Research Association,
Annual Meeting, Rolla, Mo., June 22, 1984.

123. Summers, D.A., et al., Code of Practice s 1985, the Code of Practice of the Waterjet Technology Association.

124. Estus, J.M., and Summers, D.A., Hydromechanical Advanced Coal Extractor, New Technology Report, Jet
Propulsion Laboratory, JPL I.R. 30-16442/5961, June, 1984.

125. Summers, D.A., A Review of Waterjet Excavation Research, 26th Symposium on Rock Mechanics, Rapid City, SD,
June, 1985.

126. Summers, D.A., Waterjet Drilling Technology, American Mining Congress, Pittsburgh, PA., September, 1985.

127. Summers, D.A., The State of the Art in Rock Fragmentation, SME-AIME 115th Annual Meeting, New Orleans,
Louisiana, March, 1986.

128. Summers, D.A., Mazurkiewicz, M., Galecki, G., Horizontal Waterjet Exploration of Burning Coal Seams, 8th
International Symposium on Jet Cutting Technology, BHRA, Durham, England, September, 1986.

129. Summers, D.A., Innovation in Drilling Automation and Advance, The Second International Conference on Innovative
Mining Systems, University Park, Pennsylvania, October, 1986.

130. Mazurkiewicz, M., Summers, D.A.; White, J., Development For A Technology For Dealing With Burning Coal
Outcrops, 1986 National Symposium on Surface Mining, Hydrology, Sedimentology, and Reclamation, Lexington, Kentucky,
December, 1986.

131. Yazici, S., and Summers, D.A., "The use of high pressure waterjets in cutting foam", 4th U.S. Water Jet Conference,
Berkeley, CA., August, 1987.

132. Summers, D.A., et al., "Considerations in the design of a waterjet device for reclamation of missile casings," 4th U.S.
Water Jet Conference, Berkeley, CA., August, 1987.

133. Summers, D.A., "Considerations in the Use of High Pressure Waterjet System for the Extinguishment of Burning Coal
Seams," International Waterjet Symposium, Beijing, China, September, 1987.

134. Wu, W., and Summers, D.A., "Vibration Analysis and Dynamic Characteristics of High Speed Water Jets and
Associated Piping Systems," International Waterjet Symposium, Beijing, China, September, 1987.

135. Summers, D.A., "Considerations in the Design of a Waterjet Device for Reclamation of Missile Casings," International
Waterjet Symposium, Beijing, China, September, 1987.

136. Summers, D.A., "Application of Modern Quarrying Techniques to High Speed Tunnel Excavation," Third International
Conference on Innovative Mining Systems, Rolla, Mo., November, 1987.

137. Summers, D.A., "Application of Waterjet Cutting in Industry," invited lecture, New Jersey Institute of Technology,
Newark, New Jersey, March, 1988.

138. Summers, D.A., "The Application of Abrasive Waterjets in Munition Demilitarization," invited lecture, Massachusetts
Institute of Technology, Cambridge, MA, March, 1988.

139. Summers, D.A., "A Remotely Operated PBX Debonding Facility, American Defense Preparedness
Association--Compatibility of Plastics and Other Materials with Explosives, Propellants, Pyrotechnics & Processing of
Explosives," Propellants & Ingredients Symposium, New Orleans, LA, April, 1988.

140. Fossey, R.D., Summers, D.A., et al, WOMBAT, "A Waterjet Ordnance and Munitions Blastcleaner with Automated
Tellurometry," 1988 Joint Army-Navy-NASA-Air Force Safety & Environmental Protection Subcommittee Meeting,
Monterey, California, May, 1988.

141. Chairman, "Automated Waterjet Cutting Processes Clinic," Society of Manufacturing Engineers, Dearborn, Michigan,
May, 1988.

142. Director, The 1988 Missouri S&T Waterjet Short Course, University of Missouri-Rolla, Rolla, Missouri, August 8-9, 1988.

143. Summers, D.A., "Drilling Holes in Rock with Low Pressure Abrasive," invited paper, International Federation of
Automatic Control, 1st IFAC Workshop on Advances in Automation of Underground Hard Rock Mining, Quebec, Canada,
September, 1988.

144. Summers, D.A., "Status quo and Future of Rock Cutting and Drilling by Water Jets," invited lecture, Special Lectures on
Water Jet Technology, Aobayama Campus, Tohoku University, Sendai, October, 1988.

145. Summers, D.A., Viebrock, J., "The impact of waterjets on human flesh," 9th International Symposium on Jet Cutting
Technology, Sendai, Japan, October, 1988.

146. Bortolussi, A., Summers, D.A., and Yazici, S., "The use of waterjets in cutting granite," 9th
International Symposium on Jet Cutting Technology, Sendai, Japan, October, 1988.

147. Director, The 2nd 1988 Missouri S&T Waterjet Short Course, University of Missouri-Rolla, Rolla, Missouri, November 7-8,
1988.

148. Summers, D.A., "Earth, Air, Fire and Water--The Cutting Tools of the 21st Century," invited lecture, 17th Annual
Fabrication Technology Symposium, Society of Manufacturing Engineers, Denver, CO, November, 1988.

149. Summers, David A., "Waterjet Use in Quarrying," (ITALIAN) Situazione E Prospettive Dell' Industria Lapidea,
Sardegna, Cagliari, Italy, April, 1989.

150. Summers, D.A., "Automated Waterjet Cutting Process," Clinic Chair, Society of Manufacturing Engineers, Southfield,
Michigan, May, 1989.

151. Yazici, S., Summers, D.A., "Abrasive Jet Drilling--A New Technology," 30th U.S. Symposium on Rock Mechanics,
Morgantown, West Virginia, June, 1989.

152. Yazici, S., Summers, D.A., "The Investigation of Diajet (Direct Injection of Abrasive Jet) Cutting of Granite," 5th
American Water Jet Conference, Toronto, Canada, August, 1989.

153. Summers, D.A., "The Low Pressure Use of Abrasive Waterjets," Keynote Address, Jet Tech '89, BHRA Waterjet
Meeting, Cranfield, UK, September 14, 1989.

154. Summers, D.A., "Automated Waterjet Cutting Process," Clinic Chair, Society of Manufacturing Engineers, Los Angeles,
CA, November, 1989.

155. Yazici, S., Summers, D.A., "Plain and Abrasive Waterjets," High Energy Beam Manufacturing Technologies, 1989
ASME Winter Annual Meeting, San Francisco, CA., December, 1989.

156. Summers, D.A., "Hydraulic Mining: Jet-Assisted Cutting," Chapter 22.3, Mining Engineering Handbook, Society of
Mining Engineers (to be published in 1991).

156a.  Summers, D.A.,The Applications of Waterjets to Hard Rock Cutting, Article for MINTEC, 1989.

157. Summers, D.A., Yazici, Sina, "Progress in Rock Drilling," Article for Mechanical Engineering, December, 1989.

158. Summers, D.A., "The Application of Waterjets in a Stressed Rock Environment," Third Conference on Ground Control
Problems in the Illinois Coal Basin, Mt. Vernon, IL, August 8-10, 1990.

159. Summers, D.A., Wu, Whang-Zhong, Yao, Jianchi, "A Further Investigation of DIAjet Cutting," 10th International
Symposium on Jet Cutting Technology, Amsterdam, Holland, October 31 - November 2, 1990.

160. Summers, D.A., Blaine, Jim, Fossey, Bob, Tyler, John, and Smith, Tim, "The Clearing of Grand Gulf Cave," 10th
International Symposium on Jet Cutting Technology, Amsterdam, Holland, October 31-November 2, 1990.

160a.  Fossey, R.D.,Summers, D.A., Blaine, J.G., Tyler, L.J., "Son of WOMBAT (Lessons
Learned in theDevelopment of an Automated Explosive Removal System)",  10th
International Symposium on Jet Cutting Technology, Amsterdam, Holland, October 31-November 2, 1990.

161. Summers, D.A., Yao, Jianchi, "First Steps in Developing an Abrasive Jet Drill," 8th Annual Workshop, Generic Mineral
Technology Center, Mine Systems Design and Ground Control, Reno, Nevada, November 4-6, 1990.

162. Summers, D.A., Clinic Chairman for Successful Application and Implementation of Waterjet Cutting Systems, Society
of Manufacturing Engineers, Cleveland, Ohio, March 19-20, 1991.

163. Summers, D.A., Yao, J., Yazici, S., "Basic Considerations in Waterjet Cutting," 1st Asian Recent Advances in Jetting
Technology Conference, Singapore, May, 1991.

164. Summers, D.A., State of the Art of Waterjet Technology, Lecture presented at the 1st Asian Workshop on Water Jet
Technology, Singapore, May, 1991.

165. Summers, D.A., Keynote Address, 1st Asian Recent Advances in Jetting Technology Conference, Singapore, May,
1991.

166. Summers, D.A., Application of Waterjet Technology in Engineering, Lecture presented at the Universita degli Studi di
Cagliari, Dipartimento Di Ingegneria Mineraria E Mineralurgica, Cagliari, Italy, June 2-8, 1991.

167. Yao, J., Summers, D.A., Galecki, G., DIAjet Cutting of Dolomite & Chert--A Case Study at the St. Louis Arch, 6th
American Waterjet Conference, Houston, Texas, August 24-27, 1991.

168. Yao, J., Summers, D.A., Blaine, J.G., Tyler, L.J., Field Trials and Developments of the DIAdrill Concept, 6th
American Waterjet Conference, Houston, Texas, August 24-27, 1991.

169. Summers, D.A., Applications of High Pressure Waterjets to Mining, Inst MinE, Neville Hall,
Newcastle, ENGLAND, September 19, 1991.

170. Summers, D.A., Yao, J., Yazici, S., Water Jet Cutting of Rock, Concrete and Steel--Trends for the Future,
International Geomechanics 91 Conference, Ostrava - Poruba, Czechoslovakia, September 24-26, 1991.

171. Summers, D.A., Perforating with Waterjets, Presentation to Directional Drilling Tech Support Group, Richland,
Washington, October 28, 1991.

172. Yao, J., Summers, D.A., Blaine, J.G., The Development of an Abrasive Jet Drill, 9th Annual Workshop, Generic
Mineral Technology Center, Mine Systems Design and Ground Control, Lexington, Kentucky, November 10-12, 1991.

173. Yao, J., Summers, D.A., Room and Pillar In-seam Excavator and Roof Supporter (RAPIERS), 1992 SME Annual
Meeting and Exhibit, Phoenix, Arizona, February 24-27, 1992.

174. Summers, D.A., Lessons learned in the use of low pressure abrasive waterjets for precision drilling and cutting in
mining, Article for Mining & Quarrying Technology - International (MINTEC), 1992 (due for publication March, 1992).

175. Rupert, Gerald, Summers, David, Hopkins, Alan, Radar Imagery and Bore Hole Data--A Partnership for Identifying a
Rock Instability Problem, 4th International Conference on Ground Penetrating Radar, Rovaniemi, Finland, June 8-13, 1992.

176. Summers, D.A., Rupert, G.B., Excavation of an Underground Theater below the St. Louis Arch, 5th International
Conference on Underground Space and Earth Sheltered Structures, Delft University of Technology, Delft, The Netherlands,
August 2-7, 1992.

177. Fossey, R.D., Blaine, J.G., Summers, D.A., The Feasibility of Commercial DIAjet Use (A Case Study), 11th
International Conference on Jet Cutting Technology, St. Andrews, Scotland, September 8-10, 1992.

178. Summers, D.A., Fossey, R.D., Blaine, J.G., DIAjet Use in Environmental Application, 11th International Conference
on Jet Cutting Technology, St. Andrews, Scotland, September 8-10, 1992.

179. Summers, D.A., Blaine, J.G., Fossey, R.D., Tyler, L.J., Yao, J., Low Pressure Abrasive Waterjet Use for Precision
Drilling and Cutting of Rock, 11th International Conference on Jet Cutting Technology, St. Andrews, Scotland, September
8-10, 1992.

180. Summers, D.A., Yao, J., The Application of High Pressure Waterjets in a Room and Pillar Operation, 11th
International Conference on Jet Cutting Technology, St. Andrews, Scotland, September 8-10, 1992.

181. Galecki, G., Summers, D., Steel Shot Entrained Ultra High Pressure Waterjet for Cutting and Drilling in Hard Rocks,
11th International Symposium on Jet Cutting Technology, St. Andrews, Scotland, September 8-10, 1992.

182. Summers, David A., Use of Hydraulic Water Jets for Future Coal Cutting Equipment, 4th Ground Control Conference
for Midwestern U.S. Coal Mines, Mt. Vernon, IL., Nov. 2-4, 1992.

183. Wright, Douglas E., Summers, D.A., Abrasive Conservation in DIAdrill Operations, 10th Annual Workshop, Generic
Mineral Technology Center, Mine Systems Design and Ground Control, Moscow, Idaho, November 15-17, 1992.

184. Wright, Douglas E., Summers, D.A., Abrasive Conservation in DIAdrill Operations, 16th Annual Energy-Sources
Technology Conference & Exhibition, Houston, TX, January 31 - February 3, 1993.

185. Mann, Michael, Tyler, John, Summers, David A., ROWER and the Cleaning of Grand Gulf Cave, 5th Topical Meeting
on Robotics and Remote Systems, Knoxville, TN, April 26-29, 1993.

186. Summers, D.A., Wright, D., Galecki, G., Failure Mechanisms Under Waterjet Impact, 34th U.S. Symposium on Rock
Mechanics, University of Wisconsin-Madison, Madison, Wisconsin, June 27-30, 1993.

187. Summers, David A., Worsey, Paul, Programmed Extraction of Explosive and Propellant from Military Casings,
International Annual Conference of ICT, Energetic Materials--Insensitivity and Environmental Awareness, Pfinztal
(Berghausen), Germany, June 29 - July 2, 1993.

188. Wright, D.E., Summers, D.A., Performance Enhancement of DIAdrill Operations, 7th American Waterjet Conference,
Seattle, Washington, August 28-31, 1993.

189. Summers, D.A., Historical Perspective of Fluid Jet Technology, Short Course paper, 7th American Waterjet
Conference, Seattle, Washington, August 28-31, 1993.

190. Summers, D.A., Blaine, J.G.," A Fundamental Test for Parameter Evaluation," International Conference:
GEOMECHANICS 93, Hradec/Ostrava, Czechoslovakia, September 28 - October 1, 1993.

191. Iyoho, A.W., Summers, D.A., Galecki, G., Petroleum Applications of Emerging High Pressure Jet Technology, Society
of Petroleum Engineers, 68th Annual Technical Conference & Exhibition, Houston, Texas, October 3-6, 1993.

192. Summers, D.A., Worsey, P.N., Burch, D., Johnson, M.," The Programmed Extraction of Explosive and Propellant from
Military Casings Using the Missouri S&T WOMBAT System," International Symposium on Energetic Materials Technology, American
Defense Preparedness Association, March 21-24, 1994, Orlando, Florida.

193. Summers, D.A., Worsey, J.G., Fossey, R.D., Burch, D., Johnson, M., " Waterjet Cutting Parameterization Test for the
Programmed Extraction of Explosive and Propellant from Military Casings," International Symposium on Energetic Materials
Technology, American Defense Preparedness Association, March 21-24, 1994, Orlando, Florida.

194. Summers, D.A., Application of Water Jet for Cleaning, 1994 Joint Jannaf S&EPS and PDCS Environmentally Benign
Cleaning and Degreasing Technology Workshop, Naval Surface Warfare Center, Indian Head, Maryland, June 14-15, 1994.

195. Summers, D.A., Rupert, G.B., Mann, M.," Stable Ground Excavation in a Delicate Environment," Fifth Ground Control
Conference for Midwestern U.S. Coal Mines, Collinsville, IL, June 27-29, 1994.

196. Merk-Gould, Linda, Fine Objects Conservation, Inc., Summers, David A., Fossey, Robert, and Blaine, Jim, University
of Missouri-Rolla, Thomas Crawford's Statute of Freedom Research and Selection of Waterjets as the Corrosion Removal
Method, NACE International, Dialogue/94 Coatings for Outdoor Metals Used in Artistic and Historic Works, Johns Hopkins
University, Baltimore, Maryland, July 12-14, 1994.

197. Wright, D.E., Summers, D.A., Macneil, W., CUSP - A Method for Rock Removal, 12th Annual Workshop of the
Generic Mineral Technology Center, Mine Systems Design and Ground Control, Fairbanks, Alaska, September 18-20, 1994.

198. Fossey, R.D., Summers, D.A., Blaine, J.G., Tyler, L.J., The New Generation Waterjet Explosives Cutting System,
12th International Conference on Jet Cutting Technology, Applications and Opportunities, Rouen, France, October 25-27,
1994.

199. Xu, J., Summers, D.A., Experimental Evaluation of the Performance of Fan Jet Systems, 12th International Conference
on Jet Cutting Technology, Applications and Opportunities, Rouen, France, October 25-27, 1994.

200. Galecki, G., Summers, D.A., Sprung, J., Yount, J., Development of a Waste Excavation End Effector, 12th
International Conference on Jet Cutting Technology, Applications and Opportunities, Rouen, France, October 25-27, 1994.

201. Fossey, R.D., Summers, D.A., Blaine, J.G., Merk-Gould, L., A Big Bath for a Big Lady (Cleaning the Statue of
Freedom with Waterjets), 12th International Conference on Jet Cutting Technology, Applications and Opportunities, Rouen,
France, October 25-27, 1994.

202. Wright, D., Summers, D.A., Sundae, L., A Comparison of Abrasive Waterjet and Waterjet Assisted PDC Drill Bits,
12th International Conference on Jet Cutting Technology, Applications and Opportunities, Rouen, France, October 25-27,
1994.

203. Summers, D.A., Worsey, P.N., University of Missouri-Rolla, Sims, K., Burch, D., Johnson, M., Naval Surface Warfare
Center, Mechanisms of Waterjet Demilitarization, 1994 Luxembourg International Symposium on the Rehabilitation of
Military Sites and Demilitarization of Explosive Ordnance, Demil '94, Kirchberg, Luxembourg, November 14-18, 1994.

204. Wright, D.E., Macneil, W.R., Summers, D.A., Automation of the Cut and Split Excavation Process by Use of a
Computer Controlled Abrasive Waterjet, Third International Symposium on Mine Mechanization and Automation, Colorado
School of Mines, Golden, Colorado, June 12-14, 1995.

205. Bamberger, J.A., Rinker, M.W., Alberts, D.A., Summers, D., Golcar, G.R., Mullen, O.D., Hatchell, B.K., Waste
Dislodging and Conveyance. Remote Retrieval of Solid and Sludge Radioactive Wastes from Underground Storage Tanks
with Limited Dilution, ER '95, Denver, Colorado, August 13-18, 1995.

206. Summers, D.A., Galecki, G., Rinker, M., Christienson, C., Randolph, J., The Use of Low Reaction Dislodging Tools
for Waste Retrieval from Underground Storage Tanks, 8th American Water Jet Conference, Houston, Texas, August 27-30,
1995.

207. Xu, J., Summers, D.A., Wright, D.E., and Peterson, C.R., Tunnel Boring Machine Enhancement, 8th American Water
Jet Conference, Houston, Texas, August 27-30, 1995.

208. Wright, D.E., Macneil, W.R., and Summers, D.A., "Development of the CUSP Mining Tool for Automated
Underground Excavation" ,S 8th American Water Jet Conference, Houston, Texas, August 27-30, 1995.

209. Fossey, R.D., Summers, D.A., Kalim, P., Nejib, U., "The Development of a Portable WOMBAT Facility", 8th
American Water Jet Conference, Houston, Texas, August 27-30, 1995.

210. Summers, D.A., "Recent Advances in the use of High Pressure Waterjets in Mining Applications", Advanced Mining
Technology Workshop, NADET Institute, Colorado School of Mines, Golden Colorado, October 5-6, 1995.

211. Summers, D.A., "Recent Advances in the use of High Pressure Waterjets in Drilling Applications", Advanced Mining
Technology Workshop, NADET Institute, Colorado School of Mines, Golden Colorado, October 5-6, 1995.

212. Macneil, W.R., Schmidt, M., Summers, D.A., "Abrasive Jet Slotting of Rock", 13th Annual Workshop of the Generic
Mineral Technology Center for Mine Safety and Environmental, Blacksburg, Virginia, October 22-24, 1995.

213. Sundae, Laxman S., Summers, David A., Wright, Douglas, and Cantrell, Bruce K., "The Reduction of Airborne Dust
Generated by Roof Bolt Drill Bits Through the Use of Water", Report of Investigations 9594, United States Department of the
Interior, Bureau of Mines.

214. Summers, D.A., "The Development of a Dislodging and Conveying System for HLW", Nuclear Engineering Seminar,
Missouri S&T Nuclear Engineering Department, 227 Fulton Hall, Missouri S&T, Rolla, MO, Wednesday, March 7, 1996, 3:30 P.M.

215. Summers, D.A., "Some of Missouri S&T's Contributions to Industry", Mu Alpha Theta Club, Salem High School, Salem, MO,
February 7, 1996.

216. Summers, D.A., Mazurkiewicz, M., "The Use of Waterjetting Technology to Discriminately Mine Minerals", Thereby
Reducing the Quantities of Waste that Need to be Handled, 1st International Conference - Problems of Creating Ecologically
Clean and Mineral-Saving Technologies of Mining Mineral Resources and Processing Mining Production Waste, Tula, Russia,
May 15-18, 1996.

217. David A. Summers, Ahmet Unal, "Multimedia Computer Support for a Course in Ground Control", 5th Conference on
the Use of Computers in the Coal Industry, Morgantown, WV, June 9-12, 1996.

218. Summers, D.A.," From Brute Force to Intelligent Use - the Birth of a New Technology," Keynote Address, 13th
International Conference on Jetting Technology, Sardinia, Italy, October 29-31, 1996.

219. Summers, D.A., Galecki, G., Rinker, M., Randolph, J., "The Development of a Light-Weight System for Excavating
High Level Radioactive Waste from Underground Storage Tanks", 13th International Conference on Jetting Technology,
Sardinia, Italy, October 29-31, 1996.

220. Fossey, R.D., Summers, D.A., "The Second Decade of Waterjet De-militarization. New Concerns," New Solutions,
13th International Conference on Jetting Technology, Sardinia, Italy, October 29-31, 1996.

221. Summers, D.A., Macneil, W., Schmidt, M., Xu, J.," The Use of Waterjets in the Pre-Profiling of Underground
Excavations," 13th International Conference on Jetting Technology, Sardinia, Italy, October 29-31, 1996.

222. Randolph, J.D., Lloyd, P.D., Johnson, M., Burks, B.L., ORNL; Blank, J., Advanced Sciences Technology; Rinker, M.,
Mullen, D., Battelle PNL; Alberts, D., Waterjet Technologies Inc.; and Summers, D.A., Univ. of Missouri-Rolla,
"Development of a Waste Dislodging and Retrieval System for use in the ORNL Gunite Tanks", American Nuclear Society
Seventh Topical Meeting on Robotics and Remote Systems, Augusta, Georgia, April 27 to May 1, 1997.

223. Summers, D.A., Worsey, P.N., Galecki, G., University of Missouri-Rolla, and Johnson, M., Naval Weapons Support
Center s Crane," The Design of a Large Scale Rocket Motor Facility," 5th Global Demil Symposium, Sparkes, NV, May,
1997.

224. Summers, D.A., Mazurkiewicz, M.,  "Disarming Munitions s Removing the Barriers to Friendship", In Celebration of the
70th anniversary of Dr. Brenner, Tula, Russia, May,1997.

225. Gertsch, R.E., Summers, D.A., "Rock Failure Energies and Failure Processes", 4th International Symposium on Mine
Mechanization and Automation, Brisbane, Australia, July, 1997, pp. A8-9 to A8-16.

226. Wilson, J.W., Summers, D.A., Gertsch, R.E.," The Developments of Waterjets for Rock Excavation," 4th International
Symposium on Mine Mechanization and Automation, Brisbane, Australia, July, 1997, pp. A4-9 to A4-21.

227. Galecki, G., Fossey, R.D., Rinker, M., Mullen, O.D., Summers, D.A.," Designing a Waste Retrieval System for
Radio-Active Waste Recovery," 9th American Water Jet Conference, Dearborn, Michigan, August 23-26, 1997.

228. Gertsch, R., Summers, D.A.," Enhancing the Drilling Potential of Polycrystalline Diamond Impact Tools," 9th American
Water Jet Conference, Dearborn, Michigan, August 23-26, 1997.

229. Fossey, R.D., Blaine, J.G., Tyler, L.J., Sabin, M., Summers, D.A., Sims, K.," Practical Problems in the Demilitarization
of Munitions," 9th American Water Jet Conference, Dearborn, Michigan, August 23-26, 1997.

230. Summers, D.A., "The Use of High Pressure Waterjets in Landmine Remediation", MURI Review Meeting, Ft. Belvoir,
VA, 1998.

231. Summers, D.A.," Waterjet Applications s Session Review," 5th Pacific Rim International Conference on Water Jet
Technology, New Delhi, India, February 3-5, 1998.

232. Summers, D.A., Wood, B., The Safe Operation of Waterjetting Equipment, Liquid Waste Haulers Conference,
Nashville, TN, February, 1998.

233. Gertsch, R.E., Summers, D.A., University of Missouri-Rolla; Hall, D., NOVATEK, Inc., "Enhancing the Drilling
Potential of Polycrystalline Diamond Impact Tools," SME Annual Meeting, Orlando, Florida, February, 1998.

234. Summers, David A., Fossey, Robert D., and Thompson, S.J., "Neutralization of potential landmine hazards by abrasive
waterjet use," Aerosense 98, Society of Photo-Optical Instrumentation Engineers, Orlando, Florida, April 15, 1998.

235. Mitchell, O.R., Rao, V.S., Herrick, T.J., Stuller, J.A., Denier, R., Summers, D.A., "Detection and Identification of
potential landmine hazards by waterjet use," Aerosense 98, Society of Photo-Optical Instrumentation Engineers, Orlando,
Florida, April 13 - 17, 1998.

236. Mitchell, O.R., Rao, V.S., Moss, R.H., DuBroff, R.E., Drewniak, J.L., Flanigan, V.I., Herrick, T.J., Kapila, S.,
Rechtein, R.D., Stuller, J.A., Summers, D.A., "Sensor fusion for a ground-based landmine detection system," Aerosense 98,
Society of Photo-Optical Instrumentation Engineers, Orlando, Florida, April 13 - 17, 1998.

237. Herrick, T., Summers, D., and Denier, R., "The use of pulsed waterjet systems in the detection of buried mines,"
Demining MURI Review Meeting, Washington, DC, August 10-14, 1998.

238. Summers, D., Thompson, T., and Barnes, E., "The use of plain and abrasive waterjets in the identification and
neutralization of landmines," Demining MURI Review Meeting, Washington, DC, August 10-14, 1998.

239. Santi, P., Bell, S., and Summers, D.A., Univ. of MO-Rolla; Pixton, D., Novatek," Waterjet Assisted Polycrystalline
Diamond Indentation Drilling of Rock," 14th Inter-national Conference on Jetting Technology, Brugge, Belgium, September
21-23, 1998.

240. Fossey, R.D., Summers, D.A., Schmidt, M.F.C., Univ. of MO-Rolla; Johnson, M., NSWC-Crane," The Use of an
Abrasive Waterjet System at 700 Bar for the Cutting of Military Munitions as part of a Demilitarization Program," 14th
International Conference on Jetting Technology, Brugge, Belgium, September 21-23, 1998.

241. Denier, R., Herrick, T., Mitchell, R.O., Summers, D.A.," The Use of Waterjets in the Location and Exposure of
Landmines for Humanitarian Demining," 14th International Conference on Jetting Technology, Brugge, Belgium, September
21-23, 1998.

242. Summers, D.A., Mazurkiewicz, M., "Disarming Munitions - Removing the Barriers to Friendship", Tula University
News, Tula, Russia, November (?) 1998.

243. T. J. Herrick, D. A. Summers, "Acoustical and Doppler radar detection of buried landmines impacted by a high pressure
waterjet", paper 3710-22, AeroSense 1999, SPIE. Orlando, FL, April 5-9, 1999

244. Mr. Mike Johnson*, Mr. Dan Burch, NSWC; Dr. David Summers, Mr. Robert Fossey, Mr. Jim Blaine, "Abrasive
Waterjet Cutting Demilitarization of 40MM Projectiles", JOCG/NDIA 1999 Global Demilitarization Symposium, Tulsa, OK,
May 17-20, 1999.

245. Robert D. Fossey, Summers, D.A., Galecki, G., University of Missouri-Rolla; Rinker, Mike, Erian, Fadel, Battelle,
PNNL, "High Volume-Low Pressure Nuclear Waste Removal s The Sluicing Concept," 10th American Waterjet Conference,
Houston, TX, August 14-17, 1999.

246. E. Sandys, ARBS; S. Porter, OPHIR RF; D. Summers, G. Galecki, R. Fossey, J. Blaine, J. Tyler, University of
Missouri-Rolla, "The Carving of the Millennium Arch," 10th American Waterjet Conference, Houston, TX, August 14-17,
1999.

247. D.A. Summers, O.R. Mitchell, S.J. Thompson, R. Denier, E. Barnes, "Waterjet Use Dealing With The Problem of
Anti-Personnel Landmines," 10th American Waterjet Conference, Houston, TX, August 14-17, 1999.

248. David A. Summers, James Blaine, Robert Fossey, Mark Schultz, Scott Porter and Edwina Sandys," The Use of
Waterjets in Cutting a Multiple Phase Material," International Symposium on New Applications of Water Jet Technology,
October 19-21, 1999, Ishinomaki, Japan, Paper No. 32.

249. Galecki, G., Summers, D.A., "Comparison Between Abrasive Fragmentation in Voncentional High Pressure Cutting and DIAJET System," International Symposium on New Applications of Water Jet Technology, October 19-21, 1999, Ishinomaki, Japan, Paper No. 33.

250. Summers, David A., "Water jets offer precise cutting," article in International Water Power & Dam Construction, November, 1999, page 39.

251.Summers, D.A., "Precision and Profile Cutting with plain and abrasive waterjets," 4th North American Rock Mechanics Symposium, Seattle, WA, July 30 �? Aug. 2, 2000.

252. D.A. Summers, R Fossey, J. Blaine, and E. Sandys, "The application of waterjets in developing objects of art," 15th International Conference on Jetting Technology, Ronneby, Sweden, 6-8 Sept, 2000, pp. 149 �? 160.

253. Summers, D.A., "Waterjet Use �? From Science to Art," Keynote address 6th Pacific Rim International Conference on Water jet Technology, Sidney, Australia, 9 �? 11 October, 2000, pp; 35 �? 41.

254. Summers, D.A., "Waterjetting �? cutting with confidence," Missouri Society of Professional Engineers, Springfield chapter, February 22, 2001.

255. David A. Summers, "Waterjet Use in Decontaminating Surfaces," American Nuclear Society 9th International Topical Meeting on Robotics and Remote Systems, Seattle WA, March 4 �? 8, 2001.

256. Summers, D.A., "Waterjetting Technology �? Science leads to Art", National Science Teachers Association, National Convention, St. Louis, March 22-25, 2001.

257. D. A. Summers, G. Galecki, R. Fossey, L. J. Tyler, M. Johnson, G. Olson, W. Wapman "The Use of High Pressure Waterjets in a Cutting Cell Operation," 9th Global Demil Symposium, Reno, Nevada, May 4 �? 11, 2001.

258. Galecki, G. and Summers, D.A., "Comparison between abrasive fragmentation in conventional high pressure abrasive jetting and the abrasive slurry jet," 6th Pacific Rim International Conference on Water jet Technology, Sidney, Australia, 9 �? 11 October, 2000, pp; 148 �? 151.

259. D.A. Summers, J.G. Blaine, L.J. Tyler, "Waterjet Use in Sculpting Large and Small Objects," 2001 American Waterjet Conference, Minneapolis, MN, August 18-21, 2001.

260. D.A. Summers, R.D. Fossey, J.W. Newkirk, G. Galecki, Missouri S&T; M. Johnson, NSWC; G. Olson, DAC, " Results of Comparative Nozzle Testing Using Abrasive Waterjet Cutting," 2001 American Waterjet Conference, Minneapolis, MN, August 18-21, 2001.

261. R.D. Fossey, D. A. Summers, J. W. Newkirk, G. Galecki, Missouri S&T; M. Johnson, D. Burch, NSWC, "Abrasive Cutting Comparisons," 2001 American Waterjet Conference, Minneapolis, MN, August 18-21, 2001.

262. Summers, David A., "Hydroexcavation," article will be published in McGraw-Hill's 2002 Yearbook of Science & Technology, September 2001.

Web address: http://www.AccessScience.com.

263. David Summers, Greg Galecki, Robert Fossey, Lawson J. Tyler, University of MO-Rolla; Mike Johnson, NSWC; Greg Olson, DAC; Walt Wapman, SNL, "The Use of High Pressure Waterjets in a Cutting Cell Operation," NDIA 2001 Global Demilitarization Symposium & Exhibition, Sparks, Nevada, May 14-17, 2001.

Book:

Summers, David A., Waterjetting Technology, E & FN SPON, ISBN #: 0 419 19660 9, First Edition 1995, 882 pp.

Patents:

Patent # 4,l06,577: "Hydromechanical Drilling Device," 77-P-Missouri S&T-009, July l978.

Patent #4,119,160: Method and Apparatus for Water Jet Drilling of Rock

Patent #4,317,492: Method and Apparatus for Drilling Horizontal Holes in Geological Structures from a Vertical Bore

Patent #5,037,431: Surgical Liquid Lance Apparatus

Patent #4,080,l68, 77-P-Missouri S&T-009, May l978.