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· The ,Mine Safety, and Health Administration should take over all dust sampling in ,coal, mines to make sure dust levels are safe, and it should consider lowering the maximum amount of dust allowed below 2.0 mg. per cubic meter of air. NO. 2: FILTERED ,HELMETS, Some industry representatives have promoted miners use of a ,helmet, that sends a
Ermelo area, South Africa’s most intensely worked coalfield. A number ,of coal mine, managers, ,coal, companies and the Chamber of Mines were approached, but chose not to respond. ,Mine, publicists generally point to the positive impacts of mining, like job creation and spin-off businesses. It is a sobering thought that only 41% of the income from
4.6(2) The employer of every underground ,coal mine, must take reasonable measures to ensure that the competent person referred to in regulation 4.4(1) ,does, not fire an explosive charge in an underground ,coal mine, where the place where the explosive charge is to be fired is dry and dusty, unless— (a) a permitted explosive is used; and
The mines and the dark pits of war also ,represent, Owen’s ongoing dreams of hell. Owen’s and Time’s fires, fed by the ,coal, miners who risk their lives, are examples of the home fires which a popular song of the time exhorted those on the Home front to ‘keep burning’ …
A ,safety, lamp is any of several types of lamp that provides illumination in ,coal, mines and is designed to operate in air that may contain ,coal, dust or gases, both of which are potentially flammable or explosive. Until the development of effective electric lamps in the early 1900s miners used flame lamps to provide illumination. Open flame lamps could ignite flammable gases which collected in ...
Together they ,represent, important improvements in ,coal mine safety, and efficiency. They are also significant as reflections of the last wave of capital improvements in tunnel mining before the industry shift to surface, pit, and strip ,coal, mining.
Cage - In a ,mine, shaft, the device, similar to an elevator car, that is used for hoisting personnel and materials. Calorific value - The quantity of heat that can be liberated from one pound ,of coal, or oil measured in BTU's. Cannel ,coal, - A massive, noncaking block ,coal, with a fine, even grain and a conchoidal fracture which has a high percentage of hydrogen, burns with a long, yellow flame ...
Coal, 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 mine, and its structures are a colliery, a ,coal mine, is a 'pit', and ...