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place of coal gangue mine

The most recent coal mine liquidation was in 2000. In 1989, 67 coal mines in the USB covering an area of 1800 km 2 produced 171.4 million tons of coal (Bilans, 1990). Only 14 years later, in 2003, 34 coal mines active over an area of 1100 km 2 produced 93.3 million tons of coal (Bilans, 2004).

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