| Name Organization | Address City, State Zip | Phone Mobile Phone | |
|---|---|---|---|
| Thomas Sheahan Northeastern University | 400 Snell Engineering Center, 360 Huntington Avenue Boston, MA 02115-5005 | (617) 373-3825 | |
| Gene Sheedy Midwest Drilled Foundations & Engineering, Inc. | 200 S. Prairie Avenue Waukesha, WI 53186 | ||
| Joe Sheehan EE Cruz Inc | 32 Avenue of the Americas New York, NY 10013 | (212) 431-3993 (631) 831-3452 | |
| Kaustubh Shekhar Powell Foundations | 180 Ram Forest Road Stouffville, ON L4A 2G8 | (226) 706-8380, Ext. 2267068380 2267068380 | |
| Angie Sheridan Intech Anchoring Systems, Inc. | 8250 Bunkum Rd Caseyville, IL 62232 | 618-398-5503 | |
| Roger Shiffler Long Foundation Drilling Co. | 291 Fleming Road, P.O. Box 170314 Tarrant, AL 35217-0314 | (205) 841-1014 | |
| Fred Shin ATS Drilling, Inc. | 6559 Midway Road Fort Worth, TX 76117 | (817) 498-0040 | |
| David Shupe Drill Tech Drilling & Shoring, Inc. | 2200 Wymore Way Antioch, CA 94509 | (925) 978-2060 | |
| Eric Si Luoyang Sinorock Engineering Material Co., Ltd. | No.1 Fenghua Road, High-Tech District Luoyang, Henan Province 471000 | 86-18537992030 | |
| Ken Sifford Mississippi Valley Equipment Company | 1198 Pershall Road Saint Louis, MO 63137-3538 | (314) 869-8600 | |
| Jose Calisto Silva Biggs Cardosa Associates, Inc. | 500 S. Main Street, Suite 400 Orange, CA 92868 | 7143528317 9494249601 | |
| Sean Silveira Hillside Drilling, Inc. | P.O. Box 70130 Pt. Richmond, CA 94807 | (510) 234-6532 | |
| Sarah Silverberg 7239900 SAGE Environmental, Inc. | 172 Armistice Blvd Pawtucket, RI 2860 | 4017239900, Ext. 113 | |
| Marco Silvestre Building & Earth Sciences, Inc. | 1403 S 70th East Ave Tulsa, OK 74112 | (918) 439-9005 | |
| 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 | |
| Robert Simpson Load Test Consulting, Ltd. | 320 Town Center Ave., Suite C-11, #148 Suwanee, GA 30024 | 678-262-6932 | |
| 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 | |
| Penny Sisson American Piledriving Equipment, Inc. | Southeast Regional Office, 1345 Industrial Park Road Mulberry, FL 33860 | (863) 324-0378 | |
| Umaipalan Sivaratnarajah EarthSpectives | 250 Goddard Irvine, CA 92618 | (949) 777-1270 | |
| Siva Sivathayalan Carleton University | 1415 Colonel By Drive Ottawa, ON | (613) 520-2600 |
|