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Oil and Gas Field Services, NEC
Bailing, Cleaning, Swabbing, and Treating of Wells
Construction, Repair, and Dismantling Services
Excavating Slush Pits and Cellars
Fire Fighting, Oil and Gas Field
Fishing for Tools, Oil and Gas Field
Lease Tanks, Oil Field: Erecting, Cleaning, and Repairing
Measurement of Well Flow Rates, Oil and Gas