Overburden pile at Gold Run Pass Mine

Sediment overlying coal seams is scraped off and dumped in piles to allow mining of coal at Gold Run Pass mine by <a href="http://www.groundtruthtrekking.org/Issues/AlaskaCoal/UsibelliCoalMine.html">Usibelli</a> in Alaska.
— Sediment overlying coal seams is scraped off and dumped in piles to allow mining of coal at Gold Run Pass mine by Usibelli in Alaska.

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