EXCITING news from Kailan, one of China's important coal base: As of December 23, 1975, coal production reached 25 million tons, or twice the designed productive capacity for the year. Two Kailans...
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EXCITING news from Kailan, one of China's important coal base: As of December 23, 1975, coal production reached 25 million tons, or twice the designed productive capacity for the year. Two Kailans...