9月4日至5日,河南省煤炭厅在禹州市吕沟煤矿召开“河南省地方煤矿顶板管理现场会”,总结推广吕沟煤矿加强顶板管理,实现安全生产的经验。吕沟煤矿是在1961年接收一个年产3万吨小煤窑的基础上,经过三次大的技术改造,发展成为年产36万吨以上的中型矿井。他们依靠科技进步,走出了一条适合地方煤矿发展的新路子,原煤产量年年增加,经济效益逐年提高。连续四年(1983～1986)被评为“全国地方煤矿先进单位”,连续2年(1987～1988)被能源部命名为“部级质量标准化矿井”。1989年生产原煤36.5万吨,实现利润385万元,先后被中煤企协,河南省政府授予“煤炭工 From September 4 to September 5, Henan Coal Office held “Local Conference on Top Coal Mine Management in Henan Province” in Lvgou Mine, Yuzhou City, summarizing and popularizing Lugou Coal Mine’s experiences of strengthening roof management and realizing safety production. On the basis of receiving 30,000 tons of small coal mines in 1961, Lvgou Mine has developed into a medium-sized mine with an annual output of 360,000 tons after three major technological transformations. They rely on scientific and technological progress, out of a new way for the development of local coal mines, raw coal production increased year by year, economic efficiency increased year by year. For four consecutive years (1983 ~ 1986) was named “National Advanced Unit of local coal mines,” for two consecutive years (1987 ~ 1988) by the Ministry of Energy named “minisize-quality standardized mine.” In 1989, it produced 365,000 tons of raw coal and achieved a profit of 3.85 million yuan. It has been granted the title of "Coal Worker