turning of the longwall face

Игры ⚽ Поможем решить контрольную работу

coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… … Universalium
Underground mining equipment — A coal cutting machine is used in conventional mining to undercut, top cut, or shear the coal face so that coal can be fractured easily when blasted. It cuts 9 to 13 feet into the bed. Continuous auger machine is used in mining coalbeds less… … Energy terms
Mount Keira — Wollongong, New South Wales Overlooking Wollongong Harbour and North Wollongong to Mount Keira … Wikipedia

Словари и энциклопедии на Академике