- SSI Construction
- Standing Stone Erecting Inc
- State Wide Steel
- Steel Creations
- Steel Creations
- Steel Deck Erectors
- Steel Deck Erectors
- Steel Erection Inc Celia
- Steel Erectors Inc
- Steel Systems Techonology Inc
- Stentor Communications
- Stone Construction Co
- Structural & Precast Erectors
- Structural Construction System
- Sunbelt Erector Inc
- Sunbelt Erector Inc
- Suncor Inc
- Sunset Erectors Inc
- Superior Steel Erection
- Superior Steel Erection
- Sure Steel Inc
- Swaney Steel Construction
- Thompson Erectors Inc
- Tiffom Inc
- Top Flight Steel Inc
- Tosca Steel Erecting Crews
- Towers Unlimited
- Towers Unlimited
- Trinity Steel Erection Inc
- Twin Erectors & Construction
- Twin Erectors & Construction
- United Steel Erectors Inc
- V Olson Contractors Inc
- Valley Steel Constructors
- Van Delden Co
- Van Delden Co
- Vanessa Builders
- Vaughn Steel Contractors
- Vaughn Steel Contractors
- Virginia Steel Erectors
- Virginia Steel Inc
- Vulcan Steel Erectors Inc
- W S Construction
- West Coast Steel
- West Coast Steel Placers Inc
- Western Construction
- Western Steel Erectors Inc
- Whipline Steel Erectors
- Whitehurst Steele Erectors
- Wissota Steel Erectors
- Wolf River Erectors
- Wyoming Steel Fabricators