Pioneer Technical Services, Inc. is an employee-owned full-service engineering and environmental services firm. Our corporate office is located in Butte, Montana, with branch offices throughout the northwest.Pioneer was founded as an environmental science and engineering firm and to this day that work remains our focus. The scope and breadth of our projects dictated that we expand our skills. Today, we are also a premier civil engineering, construction management, land surveying, and materials testing firm dedicated to providing innovative solutions that enable our clients to build and ...