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2010 copiapó mining accident the 2010 copiapó mining accident, also known then as the "chilean mining accident", began on thursday, 5 august 2010 with a cave in at the san josé copper–gold mine, located in the atacama desert 45 kilometers (28 mi) north of the regional capital of copiapó, in northern chile.
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Get Pricesurface mining is only economic when the coal seam is near the surface. this method recovers a higher proportion of the coal deposit than underground mining as all coal seams are exploited 90% or more of the coal can be recovered.
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