This one of 4 draglines operating at this mine. If you look close you can see the circular patterns and tracks on the side from when this dragline "walked" to it current position.
Resources - Coal
Texas Westmoreland Coal Co.’s Jewett Mine is a 35,000-acre surface mine complex located between Dallas and Houston. It currently operates five active pits. It supplies lignite (a grade of coal) under a full lignite requirements contract to the adjacent two-unit Limestone Electric Generating Station owned by NRG Texas. A low-cost, base-load power plant utilizing emission control technologies, Limestone was designed and built specifically to burn lignite from Jewett.
Limestone enjoys a solid position in the Electric Reliability Council of Texas (ERCOT) regional power market, which is heavily weighted with natural gas-fired power generation and thus more expensive and price-volatile than a market more dependent on coal-fired power. The contract between Jewett and Limestone runs through 2018. The Jewett Mine has in-place capacity currently up to 6.5 million tons of lignite annually.