| Name Organization | Address City, State Zip | Phone Mobile Phone | |
|---|---|---|---|
| Ronald Steele P.E. Steele Foundation, L.L.C. | 1420 Beverly Road, Suite 380 McLean, VA 22101 | (202) 342-1194 | |
| Alan Stephens Jeffrey Machine, Inc. | 3841 Industrial Drive Birmingham, AL 35217 | (205) 841-8600 205-306-6146 | |
| Michael Stern Morris Industries Inc. | 777 RT 23 Pompton Plains (Morris), NJ 7444 | 9738356600 | |
| John Stewart Brayman Construction Corporation | Foundation Division, 1000 John Roebling Way Saxonburg, PA 16056 | (724) 443-1533 | |
| Jonathan Stewart University of California at Los Angeles | 5750 Boelter Hall, University of California Los Angeles, CA 90095-1593 | (310) 206-6260 | |
| Mark Stier Tectonic Engineering Consultants, Geologists & Land Surveyors, D.P.C. | 70 Pleasant Hill Rd., P.O. Box 37 Mountainville, NY 10953 | (845) 534-5959 | |
| Robert Stier Drill Tech Drilling & Shoring, Inc. | P O Box 1846 Cockeysville, MD 21030 | 4105981933 4105981933 | |
| Frank Stockdale Star Iron Works, Inc. | 257 Caroline Street Punxsutawney, PA 15767 | (814) 427-2555 | |
| Kenneth Stokoe II University of Texas at Austin | Dept of Civil, Arch & Enviro Engineering 301 E. De, 301 E. Dean Keeton St. STOP 1792 Austin, TX 78712 | (512) 471-4929 | |
| Scott Stonecheck Moretrench | 144 Dexter Drive Monroeville, PA 15146 | (412) 793-9303 | |
| Wayne Street Street Foundation Drilling, Inc. | 4350 South Treadway, P.O. Box 5054 Abilene, TX 79602 | (325) 695-0583 | |
| Bruce Stroyer IDEAL Group | 80 Bluff Drive East Rochester, NY 14445 | 585-872-7190 585-645-8372 | |
| Paul Stubbs GeoTech Services, Inc. | 350 Golden Oak Parkway Cleveland, OH 44146 | (440) 439-5821 | |
| T. Caleb Sturges Pennsylvania Drilling Company (dba PENNDRILL Manufacturing) | 281 Route 30 Imperial, PA 15126 | 724-695-2400 | |
| Beena Sukumaran Rowan University | 201 Mullica Hill Road Glassboro, NJ 8028 | (856) 256-5324 | |
| Muhannad Suleiman Lehigh University | 13 East Packer Avenue Bethlehem, PA 18015 | (610) 758-3545 | |
| Greg Sullivan Subsurface Construction Company, LLC | 1107 Fuller Street Raleigh, NC 27603 | (919) 857-4609 | |
| Dave Swain Olin Engineering Inc., DBA Olinpump | 15622 Computer Ln Huntington Beach, CA 92649 | (714) 897-1230 , Ext. 2 (949) 466-6727 | |
| Paul Swan Epiroc USA LLC (formerly Atlas Copco) | 3700 East 68th Avenue, PO Box 1159 Commerce City, CO 80022 | (303) 717-2731 | |
| Roger Swap Highway Service Company, Inc. | 26401 Hall Road Woodhaven, MI 48183 | (734) 675-1000 | |
| Darin Sweeney Rev Drill Sales & Rentals, Inc. | 4605 Wedgewood Blvd Frederick, MD 21703 | (301) 662-6552 | |
| Mark Sweesy McKinney Drilling Company | 273 Lakeview Dr, Suite 101 Woodstock, VA 22664 | (540) 459-9529 | |
| Allison Swindell GMS Piling Products | 827 Sans Souci Parkway Hanover Township, PA 18706 | (570) 474-5055 (717) 939-3727 | |
| Gene Swindell GMS Piling Products | 827 Sans Souci Parkway Hanover Township, PA 18706 | 1 (570) 675-2933 | |
| John Swindell GMS Piling Products | 827 Sans Souci Parkway Wilkes Barre, PA 18706 | 5705781276 |
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