Plow (for Longwall Mining)
A plow is a simple cutting machine used in longwall mining to cut coal from thinner, softer coal beds. It features a blade of fixed picks or a saw-toothed picks for cutting slices of coal three to six inches wide. Unlike a coal shearer, a plow has no motor but is pulled along the coal face by a heavy chain at speeds of 300 feet per minute that essentially scrape the coal off the face. The use of plows in longwall mining operations has diminished since the late 1990s. They are no longer used in the U.S. or Australia and their use is steadily declining on other European countries.
- ↑ Longwall Mining. United States. Department of Energy. Office of Coal, Nuclear, Electric and Alternate Energy. Energy Information Administration, DIANE Publishing Company. pg.9
- ↑ Longwall Mining. Coal Plough. University of Wollongong. 25-06-2009.