Name of Subsidiary  | 
Mammoth Energy Partners LLC  | 
Bison Drilling and Field Services LLC  | 
Bison Trucking LLC  | 
White Wing Tubular Services LLC  | 
Barracuda Logistics LLC  | 
Panther Drilling Systems LLC  | 
Redback Energy Services LLC  | 
Redback Coil Tubing LLC  | 
Muskie Proppant LLC  | 
Stingray Pressure Pumping LLC  | 
Stingray Logistics LLC  | 
Great White Sand Tiger Lodging Ltd.  | 
Redback Pumpdown Services LLC  | 
Mr. Inspections LLC  | 
Silverback Energy Services LLC  | 
Mammoth Equipment Leasing LLC  | 
Cobra T&D LLC  | 
Cobra Acquisitions LLC  | 
Mammoth Energy Services Inc.  |