The general purpose of the occupational analysis is to provide workable, basic information dealing with the many and varied duties performed in the machine trades occupation. The document opens with a brief introduction followed by a job description. The bulk of the document is presented in table form. Fifteen duties are broken down into a number of tasks and for each task a two-page table is presented, showing on the first page: tools, equipment, materials, objects acted upon; performance knowledge (related also to decisions, cues and errors); safety--hazard; and on the second page: science; math--number systems; and communications (performance modes, examples, and skills and concepts). The duties include: maintaining machinery; performing bench operations, precision and semi-precision measurements, and heat treating operations; operating pedestal grinder; and setting up and operating cut off saws, drill presses, lathes, shapers and slotters, vertical and horizontal milling machines, surface grinder, universal grinder, tool and cutter grinder, arbor press, and electrical discharge machine. (BP)