“六五”期间,全国乡镇煤矿异军突起,以年均增长19.2％的速度发展,到1985年,在全国煤炭总产量中,已构成“三分天下有其一”的格局。进入“七五”以后,发展速度逐年趋缓,但煤炭总产量和年增长量,仍基本保持“三分天下有其一”的水平。到1990年,经过清理、整顿,全国仍有各类形式的乡镇煤矿9.1万处,年产3.77亿吨,占全国煤炭总产量的34.9％,比1980年年产1.14亿吨,净增2.63亿吨。由于乡镇煤矿的大发展,十年累计产煤25亿吨,除1257个产煤县自产自用外,增加社会 During the period of the Sixth Five-Year Plan, the township coal mines in the country sprung up with an average annual growth rate of 19.2%. By 1985, the country’s total coal output had constituted a pattern of “one-third of the world has one.” Since the “Seventh Five-year Plan”, the pace of development has slowed down year by year. However, the total output and annual growth of coal production have basically maintained the level of “one-third of the world has one.” By 1990, after cleanup and rectification, there are still 91,000 villages and towns coal mines in various forms throughout the country, with an annual output of 377 million tons, accounting for 34.9% of the national total coal output and 114 million tons more than in 1980, a net increase of 263 million Ton. Due to the great development of township coal mines, a total of 2.5 billion tons of coal have been produced over the past 10 years, with the exception of 1257 coal-producing counties that produce their own use, increasing social