Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content, and, since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production.
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The history of coal mining goes back thousands of years. It became important in the Industrial Revolution of the 19th and 20th centuries, when it was primarily used to power steam engines, heat buildings and generate electricity. Coal mining continues as an important economic activity today.
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The Castlecomer Plateau, north-east of Kilkenny, delineates the extensive Leinster coalfield. Kilkenny coal has been exploited in this area since the 1600s, initially in conjunction with the mining and smelting of iron-ore. In Castlecomer, Sir Cyprian Horsefield extracted iron in 1647.