| American
Cyanamid Company (1963-66) |
Wyoming
Minerals Corp. (1976) |
| Hazelton-Nuclear
Sciences Corporation, Teledyne-lsotopes, Inc. (1964-71) |
Lawrence
Berkeley Labs (1977-80) |
| Martin-Marietta
Corp. (1966-67) |
Rocky
Mountain Energy Co. (1977) |
| American
Cement Co. (1967-69) |
Lawrence
Livermore Labs (1978-79) |
| Dukco
Mining Co. (1970-71) |
Pincock,
Allen and Holt, Inc. (1978-80) |
| U.S. Geological
Survey (1971-74) W.A.E. |
Rockwell-Hanford
Operations (1979) |
| Mobile
Premix Co (1972-76) |
Cypress
Mines, Inc. (1979) |
| Woodward-Clyde
Consultants (1973-78; 1990-92) |
Steffen, Robertson and Kirsten
(1980-82) |
| Amoco Production Co. (1973-74) |
Inspiration Consolidated Copper
Corp. (1981-83) |
| Fugro, Inc.
(1974) |
Conoco, Inc.
(1981) |
| Tippetts-Abbet-McCarthy
& Stratton (1974) |
Eastman,
Stichter, Bergman & Smith (1981-86) |
| Grant-McHendrie,
Haines & Crouse (1975-76) |
Science Applications
Int'l. Corp. (1986 - 1992, 1992-Present) |
| Dames
& Moore, Inc. (1975-77) |
City of Mont
Belvieu, Texas (1992 - Present) |
| Law Engineering-Testing
Co. (1975-76) |
Hydro-Geo (1995-1996) |
| Climax
Molybdenum Corp., AMAX.Inc.(1975-83, 1990-92) |
Grosvenor Engineering (1996) |
| Corps
of Engineers (1976-77) |
City of Mont Belvieu (1988-Present) |
| Homestake
Mining Co. (1976-80) |
URS Corporation (2001) |
