Research mines to discover minerals and the best ways to get them out.
Examines engineering drawings of military and commercial parts, assemblies, and installations to detect errors in design documents: Compares figures and lines on production drawing or diagram with production layout, examining angles, dimensions, bend allowances, and tolerances for accuracy. Determines practicality of design, material selection, available tooling, and fabrication process, applying knowledge of drafting and manufacturing methods. Confers with design personnel to resolve drawing and design discrepancies. May specialize in checking specific types of designs, such as mechanical assemblies, microelectronic circuitry, or fluid-flow systems. May operate copier equipment to make duplicates of designs.