| Sub-Contractor | See Also | Options |
|---|---|---|
| Siemens Westinghouse Tech. Serv. | view | |
| Siempelkamp Nuclear Services | MOTA Corporation | view |
| Sierra Construction | view | |
| Sierra Crane & Hoist Co., Inc. | view | |
| Sierra Lobo Inc. | view | |
| Sigma Capital | view | |
| Sigma Industries | view | |
| Sigma Research | view | |
| Sigma Science, Inc. | SSI | view |
| Signa Tec | view | |
| Signal Communications | view | |
| Signal Drilling | view | |
| Signal Hill Electric, Inc. | view | |
| Signatic | view | |
| Signature Craft | view | |
| Signpro | view | |
| Sika Corporation | view | |
| Silco | view | |
| Silco Fire | view | |
| Silcott Railway Equipment | view | |
| Silicon Graphics, Inc. | view | |
| Siltron | view | |
| Silver Arrow Express | view | |
| Silver Eagle Company | view | |
| Silver Hawk | view | |
| Silver Sage Enterprises Inc. | view | |
| Silver Sheet Metal, Inc. | view | |
| Silver Wheel Freight | view | |
| Silverado Stages | Ryan's Express Transportation; Divine Transportation | view |
| Silverman Media Inc. | view | |
| Silvis Co. | view | |
| Simalabs International | view | |
| Simco Mechanical, Inc. | Simco Controls | view |
| Sime Construction Co., Inc. | view | |
| Simmons Engineering, Inc. | view | |
| Simon Roofing & Sheet Metal Corp. | view | |
| Simonds Saw and Steel Company (AWE 1948 – 1957; Residual Radiation 1958 – March 1, 2011) | view | |
| Simpac Inc. | view | |
| Simplex | view | |
| Simplex Grinnell | Grinnell Corporation; Tyco Laboratories | view |
| Simplex Time Recorder Co. | view | |
| Simpson and Son, Inc. | view | |
| Simpson Installation | view | |
| Simpson Painting Co. | view | |
| Simpson Timber | view | |
| Sims Corporation | view | |
| Sims Nickols | view | |
| Sims Steel Co. | view | |
| Sinclair Community College | view | |
| Singer Co. | view | |
| Singer Transport | view | |
| Singleton Labs | view | |
| Singmaster & Breyer | view | |
| Sintercast Division of Chromalloy Corporation | view | |
| Sirina Fire Protection Corp. | view | |
| Sirrine Environmental Consultants | view | |
| Sissom Installation | view | |
| Sisteel Corp. | view | |
| Site Development Inc. | view | |
| Site Engineers, Inc. | view | |
| Site Inspection | view | |
| Sites-Southwest | view | |
| Sitex Environmental Inc. | view | |
| Six Const. | view | |
| SK Construction Co. | view | |
| Skagit Steel & Iron Works | view | |
| Skanex Pipe Services | view | |
| SKAPS Industries | view | |
| Skaug Bros Inc. | view | |
| SKC Inc. | view | |
| Skelton Construction Co. | view | |
| Skidmore, Owings & Merrill | Bellusch & Skidmore, Owings & Merrill | view |
| Skill Coatings | view | |
| Skolnik Industries | view | |
| Skowf | view | |
| Skully-Jones Corp. | view | |
| Sky Shots | view | |
| Skyline Equipment | view | |
| Skyline Glass | view | |
| Skyline Painting | view | |
| Skylla Engineering, LTD. | view | |
| Slagle Mechanical | view | |
| Slate Safety | view | |
| Slater Systems Canteen Services | Slater Systems Maryland (Canteen Services); Slater Food Service Management; Aramark Corporation | view |
| Slats, Inc. | view | |
| SLC Constructors, Inc. | view | |
| Sletten Construction | view | |
| Slide By Slide, Inc. | view | |
| Slipps Firestone | view | |
| Sloan | view | |
| Slope Indicator Company | view | |
| SLT Express | view | |
| Sluciak Contracting, Inc. | view | |
| Slurry Seal of Southern Ohio | view | |
| SM and P Utility Resources | view | |
| Small Bros. | view | |
| Small's Mechanical Contractors, Inc. | view | |
| Smalley Trucking | view | |
| Smallwood Painting Co. | view | |
| Smallwood Trucking Company | view |
BTComp is a general information resource tool. It is not intended to nor does it contain all information that relates to DOE subcontractors. We reserve the right to add or delete entries at any time. We make no warranty, expressed or implied, with respect to either the completeness of the database or the accuracy of the entries on the website.