近代开滦煤矿在其生产经营繁荣的背后，矿难却是频发不断、难以遏止，矿难造成的惨重伤亡更是让人触目惊心。
Behind the prosperous production and management of modern Kailuan Mines, coal calamities broke out constantly and were hard to stop, and the heavy casualties were astonishing.
主要有开滦、大同、阳泉、淮南等煤矿。
The chief coal mines are Kailuan, Datong, Yangquan and Huainan.
主要有开滦、大同、阳泉、淮南等煤矿。
The chief coal mines are Kailuan, Datong, Yangquan and Huainan.
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