Open-pit miningWikipedia

Open-pit, open-cast or open cut mining is a surface mining technique of extracting rock orOpencut coal mine loadout station and reclaimed land at the North Antelope Rochelle coal mine in Wyoming, United States.List of open-pit mines · Closure problem applied to open-pit mines for optimal extraction (not related to

Coal miningWikipedia

Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content, and, since thes, has been widely used to generate