Alliance Resource Partners is a diversified energy and natural resources company organized as a limited partnership that operates as a leading domestic coal producer and passive holder of oil and gas mineral royalty interests. The company generates revenue through the production and marketing of thermal and metallurgical-quality coal to U.S. electric utilities and international buyers, as well as through royalty income from oil and natural gas extraction on its mineral properties across productive basins including the Permian and Powder River Basin, with additional revenue from transportation and ancillary services. The business model depends on long-term and spot market coal sales contracts with power generators and utilities, monthly or quarterly royalty distributions from third-party operators, and related service fees, with customers and revenue concentrated in the domestic electric utility sector while exposure to commodity price volatility and currency fluctuations influences overall performance.