Mining and Quarrying | Ashton BennettCoal Authority records are not always available for mining which took place in the early 19th Century and expert knowledge of mined seams and appropriate investigation is essential to reduce risk of developing over unstable mined ground. Our expertise covers coal mining, salt mining and brine extraction, sand mining,.mining and quarrying knowledge about coal mining,Coal mining - WikipediaCoal 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. In the United Kingdom and South Africa, a coal.