Perform highly skilled work pertaining to the inspection, repair and maintenance of all types of mechanical equipment, including work such as: the complete dismantling, repair, alignment and reassembly of prime movers, generators, motors, high pressure pumps, major coal-handling equipment and similar machinery; diagnose and correct troubles that occur in such equipment, and perform the necessary piping, valve work, blacksmithing, bench and shop work and associated rigging. Perform highly skilled work pertaining to the inspection, repair and maintenance of all types of electrical equipment, including work such as: major repairs on transformers, coil repairs; major repairs to air circuit breakers; analyzing, inspecting, testing and repairing of motors and their circuits for proper operations; correct troubles that may develop.