Maintenance Mechanic to use methods, materials, and equipment used in the operation and repair of plumbing, heating, electrical, water, and sewer systems; materials, methods, and tools used in the repair of mechanical equipment and in miscellaneous building maintenance and repair work and skill in the performance of such work; Safety Orders of the Division of Industrial Safety dealing with heating, electrical, plumbing, and other mechanical systems. Maintenance Mechanic to perform miscellaneous skilled work in the maintenance, alteration, and repair of buildings and mechanical systems; may instruct, lead, or supervise inmates, wards, or resident workers; and to do other related work.