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My Dad saw those pics Ultra_Miner. He said that's the biggest seam of coal he's ever seen. How thick is the seam in the first pic? He guessed 35 to 40 feet, but it looks a little thicker than that to me.
It's a mine in Gillette, Wy. We ship about 90 million tons of coal a year. The coal seam is 60 to 80 ft thick. We are building a new walking dragline with a 130 yd bucket. The dirt shovels have 60 yd buckets.