Depending on the assigned area, fabricates, sets up, calibrates, operates, tests, repairs, and/or modifies a variety of mechanical equipment, systems and devices, or performs ESH duties including environmental surveys, waste disposal, and radiological surveys. Fermilab employees, and certain guest researchers and contractors, are subject to particular restrictions related to participation in Foreign Government Sponsored or Affiliated Activities, as defined and detailed in United States Department of Energy Order 486.1A.