Analyze rock and mud to detect the presence of oil.
Supervises and coordinates activities of workers engaged in repair of electronic controls of diesel engines and generators: Trains workers in diagnosis and repair of electronic controls of diesel engines and generators in heavy equipment, such as tractors, cranes, and compressors, using test equipment and following repair manuals, blueprints, diagrams, and schematics. Reviews service calls to determine type of equipment needing repair, equipment location, and nature of problem and schedules workers for service assignments. Orders supplies and materials and maintains service records. Assists workers in repair of electronic controls at job site or in maintenance shop. Performs other duties as described under SUPERVISOR Master Title.