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A group of coal miners at the Black Wolf owned Quecreek mine in Pennsylvania accidentally dug into the neighbouring Saxman coal mine on 22 June which had not seen commercial production since 1963 Breaking into the abandoned mine flooded the Quecreek operation with 75 million gallons of water that had built up in the older mine While half of the 18 workers were able to escape to the surface
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MATERIALS FROM MINING COPPER ORES IRON ORE SAND AND GRAVEL STONE ETC Value $ billion METALS AND MINERAL PRODUCTS RECYCLED DOMESTICALLY ALUMINUM GLASS STEEL ETC Value of old scrap $ billion NET EXPORTS OF OLD SCRAP GOLD STEEL ETC Exports $ billion Imports $ billion Net exports $ billion MINERAL MATERIALS PROCESSED
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10 South Korea has modest reserves of medium quality anthracite coal 82 million tons as of 1998 Due to the high cost of production 384 mines were closed between 1989 and 1995 Coal needs for electricity generation are met through imports principally from China and Australia See
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