Self-contained self-rescue device
A self-contained self-rescue device, SCSR, self-contained self-rescuer, or air pack is a portable oxygen source for providing breathable air when the surrounding atmosphere lacks oxygen or is contaminated with toxic gases, e.g. carbon monoxide.
Two CSE SR-100 SCSRs in the opened (left) and unopened (right) states.
Self-rescue respirator, as carried
Self-rescue respirator, as worn during use
Coal mining is the process of extracting coal from the ground or from a mine. 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 mine and its structures are a colliery, a coal mine is called a "pit", and above-ground mining structures are referred to as a "pit head". In Australia, "colliery" generally refers to an underground coal mine.
A coal mine mantrip at Lackawanna Coal Mine in Scranton, Pennsylvania
Coal miners exiting a winder cage at a mine near Richlands, Virginia in 1974
Surface coal mining in Wyoming, U.S.
A coal mine in Frameries, Belgium
