Hallador Energy Company (HNRG) is a publicly traded energy company that specializes in the production and sale of coal. The company operates mines in Indiana and Colorado, and its primary customers are electric utilities and industrial companies. Hallador Energy Company was founded in 1951 and is headquartered in Denver, Colorado. The company is committed to sustainable and responsible mining practices, and it has received numerous awards for its environmental stewardship. In addition to coal production, Hallador Energy Company also invests in renewable energy projects, including wind and solar power.