Management Team

Mr. Lancaster has worked for various Mammoth subsidiaries for over 11 years. Mr. Lancaster previously served as the Vice President of Operations of Mammoth. Mr. Lancaster also served as the Operations Manager for Stingray Energy Services LLC while assisting with projects for Mammoth subsidiaries Lion Power Services LLC and Higher Power Electrical LLC from June 2019 to December 2024. Prior to these positions, Mr. Lancaster previously served as the Vice President of Redback Energy Services LLC from August 2013 to July 2014 and again from August 2015 to May 2019. From August 2014 to July 2015, Mr. Lancaster served as the Chief Operating Officer of Redback Energy Services LLC, Redback Coil Tubing LLC and Redback Pumpdowns LLC, which were all subsidiaries of Mammoth. Mr. Lancaster also served as the HSE/DOT manager for Redback Energy Services LLC from Oct 2011 to July 2013. Prior to his time with Mammoth subsidiaries, Mr. Lancaster worked as a Quality Assurance Technician for Great White Pressure Pumping LLC and a Mud Motor Technician for Great White Directional Drilling LLC from May 2010 to July 2011. Mr. Lancaster has a Bachelor of Science degree in Finance from St. Edwards University.

Mark Layton became Chief Financial Officer of our general partner in August 2014.

Mr. Layton served as Chief Financial Officer of Stingray Pressure Pumping LLC from January 2014 to August 2014. Mr. Layton was employed from August 2011 through January 2014 by Archer Well Company Inc. where his last position was Director of Finance for North America. From September 2009 through August 2011, Mr. Layton was employed by Great White Energy Services, Inc. where his last position was Corporate Controller and Director of Financial Reporting.

Mr. Layton served as Vice President of Finance of Crossroads Wireless, Inc., a wireless telecommunications service company, from May 2007 through September 2009. From April 2004 through May 2007, Mr. Layton served as the Director of Financial Reporting for Chickasaw Holding Company, a telecommunications service company.

He began his career in public accounting with Finley & Cook PLLC. Mr. Layton has a Bachelor of Science degree in Accounting from the University of Central Oklahoma. Mr. Layton is a Certified Public Accountant.