Schaffer Kurt
Schamburger Timothy R.
Schmidt David Anthony
Schmidt Robert Frank
Schnedl Karl
SDS Pacific PTE, Ltd.
Sides Daniel Harrison
Sigg Horst
Sikes Jared A.
Sims Donald Glynn
Sims Michael James
Sinclair Kirk M.
Sjoholm Harri
Stabilator AB
Stacey Oil Services, Ltd.
Stallings Jimmie L.
Stauffer Chemical Company of Wyoming
Swartout Matt
Swartout Matthew K.