This report covers the development of proposed draft SAE recommended practice j1314 entitled "human factors design guidelines for mobile underground mining equipment." The initial work began in 1978 with the SAE off road machinery technical committee (ormtc)--subcommittee 29, working group 3. In late 1980, a research contract was obtained with the U.S. Bureau of Mines to support development of additional data. Human factors engineering design criteria were needed to develop operator work stations for underground mining equipment. Contractors compiled accident histories for selected equipment types, prepared task and hazard analyses, and defined minimum envelope dimensions. Additional tasks were to recommend location and activation of controls, define minimum visibility envelopes, and describe guidelines for seating and operator ingress and egress. As of June 1-90, a draft of SAE j1314 had been proposed, but not approved by the committee.