The goal of
Coal Mining is to remove coal from the ground. Coal is valued for its energy content, and since the 1880s has been widely used to generate electricity. Steel andcement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United States, United Kingdom, and South Africa, a coal mine and its structures are a “colliery”. In Australia, “colliery” generally refers to an underground coal mine.
This image below is from an unidentified Coal Mine out of Ohio-