| Name Organization | Address City, State Zip | Phone Mobile Phone | |
|---|---|---|---|
| Rob Dahlin Cobb Strecker Dunphy & Zimmermann Inc. | 225 South Sixth Street, Suite 1900 Minneapolis, MN 55402 | (612) 349 -2420 612 710 1073 | |
| Herbert Darling III DarDrill, Inc. | 531 Fillmore Ave Tonawanda, NY 14150-2510 | (716) 634-0484 | |
| Jaime Davila Obras Especializadas Del Pacifico, S.A. de C.V. | Carr. Internacional Al Sur, #92 Col El Eastillo Mazatlan, Sinaloa 82099 | 52-669-917-0055 | |
| James Davis State of California DOT (Caltrans) | 1502 Eligio Lane Davis, CA 95618 | (530) 312-9493 | |
| John Davis III Marathon Construction Services, LLC | 27622 Highway 561 Tavares, FL 32778 | (352) 742-5010 | |
| Matt Davison Park Range Construction, Inc. | 2755 S Raritan St Englewood, CO 80110 | 3037818936 3034768815 | |
| Martin Dawson Dawson Foundation Repair | 6906 Chetwood Houston, TX 77081 | (713) 668-2110 | |
| Michael Day Marathon Construction Services, LLC | 1022 Carver Dr. Leesburg, FL 32789 | 407.949.4698 | |
| Sakkie de Jager Kelly Tractor Co / IMT International | 1642 Forest Parkway Lake City, GA 30260 | (209) 534-6349 | |
| Brooks Dean Dean Construction | 2720 Front Rd La Salle, ON N9J 2N5 | (519) 734-8999 | |
| Marc Dean Dean Construction | 2720 Front Rd La Salle, ON N9J 2N5 | (519) 734-8999 | |
| Ken Death Monir Precision Monitoring Inc. | 2359 Royal Windsor Drive, Unit #25 Mississauga, ON L5J 4S9 | (905) 822-0090 | |
| Joseph Decker Decker Construction Services | 710 North Street Lathrop, MO 64465 | 8167407005 | |
| Thomas Decker Decker Construction Services | 710 North Street Lathrop, MO 64465 | 8167407000 | |
| Jimmy Deemer American Piledriving Equipment, Inc. | Mid-Atlantic Regional Office, 500 Newton Rd. #200 Virginia Beach, VA 23462 | (757) 518-9740 | |
| Randy DeFosse Western Pacific Crane & Equipment | 19602 60th AVE NE Arlington, WA 98223 | 253.254.7950 | |
| David DeFrang Versatile Drilling Contractors, Inc. | P.O. Box 80287 Seattle, WA 98108 | (206) 763-9776 | |
| Curt Degner Taylor Ridge Drilled Foundations, Inc. | 6710 - 134th Avenue West Taylor Ridge, IL 61284 | (309) 798-5220 | |
| Jeff DeGroot Sabre Communications Corporation | 2101 Murray Street Sioux City, IA 51111 | (712) 224-1480 | |
| Robert Dehod Ledcor Foundations Ltd. | 7008 Roper Road NW Edmonton, AB T6B 3H2 | (780) 462-4211 | |
| David Delorme Mincon Group PLC | PO Box 13886 Roanoke, VA 24038 | (540) 344-9939 | |
| David DeMuro United Dynamics, Inc. | 2555 Cannon Street New Albany, IN 47150 | (812) 282-2222 | |
| Anthony Denier New York Drilling Services, Inc. | P.O.Box 918 Saugerties, NY 12477 | (845) 246-9193 | |
| Norman Dennis Jr. , Ph.D., P.E. University of Arkansas | 4190 Bell Engineering Center Fayetteville, AR 72701 | (479) 575-2933 | |
| Steve Dennis Rev Drill Sales & Rentals, Inc. | 4605 Wedgewood Blvd Frederick, MD 21703 | (301) 662-6552 |
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