| Name Organization | Address City, State Zip | Phone Mobile Phone | |
|---|---|---|---|
| Marco Silvestre Building & Earth Sciences, Inc. | 1403 S 70th East Ave Tulsa, OK 74112 | (918) 439-9005 | |
| Francois Simand LIM Technology Inc. | 3495 Piedmont Rd, Bldg 11, Suite 712 Atlanta, GA 30305 | +1 (404) 661 5299 +1 (404) 661 5299 | |
| Justin Simmons BAUER Foundation Corp. | 13203 Byrd Legg Drive Odessa, FL 33556 | 727-639-3059 | |
| Kelly Simon Equipment Corporation of America | 1 Merion Terrace, P.O. Box 837 Aldan, PA 19018 | (412) 264-4480 | |
| Scot Simon Epiroc USA LLC (formerly Atlas Copco) | 24 Saint James Court Philadelphia, PA 19106 | (610) 428-4977 | |
| Michael Simpson Infrastructure Consulting and Engineering, PLLC (d.b.a ICE of Carolinas, PLLC) | 4505 Falls of Neuse Road Raleigh, NC 27609 | (919) 523-9186 | |
| Robert Simpson Load Test Consulting, Ltd. | 320 Town Center Ave., Suite C-11, #148 Suwanee, GA 30024 | 678-472-3116 | |
| Steven Simpson CIA Machinery, Inc. | P.O. Box 763670 Dallas, TX 75376-3670 | (972) 224-5501 | |
| Don Sims Lee & Sims Drilling Services, Inc. | 10659 Augusta Rd Belton, SC 29627 | (864) 243-2682 | |
| John Sims Lee & Sims Drilling Services, Inc. | 10659 Augusta Rd Belton, SC 29627 | (864) 243-2682 | |
| Vic Sinclair John Lawrie, Inc. | 15555 Miller Rd, #1 Houston, TX 77049 | (281) 456-7100 | |
| Don Singer DSI Canada Civil, Ltd. | 19433 96th Avenue, #103 Surrey, BC V4N 4C4 | (604) 888-8818 | |
| Jon Sinnreich Load Test Consulting, Ltd. | 320 Town Center Ave., Suite C-11, #148 Suwanee, GA 30024 | (678) 472-3116 | |
| Joe Sirvinskis Stalworth Underground LLC | 5515 N. East River Rd. Chicago, IL 60656 | (773) 714-5400 | |
| Penny Sisson American Piledriving Equipment, Inc. | Southeast Regional Office, 1345 Industrial Park Road Mulberry, FL 33860 | (863) 324-0378 | |
| Justin Siu Raito, Inc. | 32960 Alvarado Niles Rd , Suite 680 Union City, CA 94587-3178 | (510) 259-9900 | |
| Siva Sivathayalan Carleton University | 1415 Colonel By Drive Ottawa, ON | (613) 520-2600 | |
| Frederick Slack Goettle | 12071 Hamilton Avenue Cincinnati, OH 45231 | (513) 825-8100 | |
| Scott Slater Keystone Drill Services, Inc. | 184 Alisa Street Somerset, PA 15501-7742 | (814) 443-2670 | |
| Scott Slater Epiroc USA LLC (formerly Atlas Copco) | 3700 East 68th Avenue, PO Box 1159 Commerce City, CO 80022 | (303) 717-2731 | |
| Jared Slyh Northwest Soil Stabilization, Inc. | 550 James Howe Rd. Dallas, OR 97338 | (503) 623-4392 | |
| Robert Slyh Northwest Soil Stabilization, Inc. | 550 James Howe Rd. Dallas, OR 97338 | (503) 623-4392 | |
| Peter Smeallie | 600 Woodland Terrace Alexandria, VA 22302-3319 | (703) 683-1808 | |
| B D SMITH Industry Advancement Fund | 8445 Freeport Parkway, #325 IRVING, TX 75063 | 4693596000 | |
| Brent Smith Con-Tech Systems Ltd. | 4502 Hanna Drive Elizabethtown, ON K6T 1A9 | (613) 342-0041 |
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