China has rich coal deposits. According to statistics, the calculated deposits of coal in China are 4.4927 trillion tons, including 2.6704 trillion tons within the shallow depth of 1,000m under ground. Up to the end o...China has rich coal deposits. According to statistics, the calculated deposits of coal in China are 4.4927 trillion tons, including 2.6704 trillion tons within the shallow depth of 1,000m under ground. Up to the end of 1991, the proven deposits were 1.0033 trillion tons and the guaranteed deposits were 983.3 billion tons. The coal formed in China covers many periods. It spreads widely with complicated types,展开更多
文摘China has rich coal deposits. According to statistics, the calculated deposits of coal in China are 4.4927 trillion tons, including 2.6704 trillion tons within the shallow depth of 1,000m under ground. Up to the end of 1991, the proven deposits were 1.0033 trillion tons and the guaranteed deposits were 983.3 billion tons. The coal formed in China covers many periods. It spreads widely with complicated types,
