Analyze rock and mud to detect the presence of oil.
Supervises and coordinates activities of workers engaged in blasting, removing, and crushing mineral ores in open-pit mines: Plans location and drilling of blast holes to ensure maximum extraction of ore and provide access roads for trucking ores out of mine. Trains workers in drilling blast holes and in loading and shooting explosive charges. Directs POWER-SHOVEL OPERATORS and TRUCK DRIVERS in stripping new diggings and in loading and removing ores from mine. Directs CRUSHER TENDER in breaking ore into pieces preparatory to extraction of valuable minerals. Performs other duties as described under SUPERVISOR Master Title.