Analyze rock and mud to detect the presence of oil.
Supervises and coordinates activities of workers engaged in erecting prefabricated homes at construction site: Verifies alignment of floor, walls, ceilings, and roof panels positioned on house foundation visually and with level for compliance with specifications. Trains new workers in construction procedures and techniques. Installs prefabricated exterior doors, using handtools. Maintains production and time records and requisitions supplies. Performs other duties as described under SUPERVISOR Master Title. May supervise workers installing trim and components in prefabricated homes and be designated Trim-Crew Supervisor.