Description:Coal needs washing before use to remove impurities. The Luhrig Washer was invented in 1887.
Birchenwood colliery opened in the 1890s, most of the coal being used for coke and other by-products. The colliery actually closed in 1932, but coke and other by-product production continued by using coal from other collieries. However this production also ceased in May 1973.