1992年8月13日,国家物价局、能源部联合发出《关于放开新井在达产期内生产的煤炭价格的通知》,内容如下:一、凡统配煤矿新投产的矿井(不包括改、扩建井).在规定的达产期内生产的煤炭价格放开,实行市场调节.自达产期结束后的次年1月1日起,执行国家统一价格.二、达产期限规定为:设计能力30万吨及以下的矿井3年;45-90万吨矿井4年; On August 13, 1992, the State Price Bureau and the Ministry of Energy jointly issued the “Notice on Opening up the Price of Coal Produced by New Reachs during the Production Period” as follows: I. All mines with newly-built coal mines (excluding the , Expansion wells) .In the prescribed production period of coal production price liberalization, the implementation of market regulation.Since the end of the production period after January 1 the following year, the implementation of the national uniform price. Second, the production deadline for the provisions of : Design capacity of 300,000 tons and below the mine for 3 years; 45-90 million tons of mines for 4 years;