East of Gillette, oldest continuously operating surface coal mine in the US, about 1.5 Mt per year, 290 Mt reserves, 24,000 tons storage, parking for one train, also powers Wyodak power plant, 335 million watts, air cooled, uses 93% less water than water cooled plants, uses water from Gillette wastewater treatment for steam generation, uses SO2 scrubber, burns 2 Mt per year from the mine