1991年6月,明尼苏达州的立宪官员们审议了本州矿地出租和开发规划。早在年初,在这些官员因1990年10月金属矿租地出卖而批准颁布州属金属矿地租约时,就提出了矿产资源管理问题。作为回答,明尼苏达州自然资源局编写了一份报告。阐述了本州的矿物政策、矿物潜力、金属矿地出租规划、环境审查与研究、常规许可证办理程序和经济影响。下面是该报告几部分的概要。 In June 1991, Minnesota constitutional officials reviewed the plans for the rental and development of the state’s mines. As early as the beginning of the year, officials raised the issue of mineral resources management when they approved the promulgation of the state metal mine lease because of the sale of the metal mine lease in October 1990. In response, the Minnesota Department of Natural Resources prepared a report. Describes the state’s mineral policy, mineral potential, metal mine lease planning, environmental reviews and research, general licensing procedures and economic impact. Below is a summary of several parts of the report.