Propane is bought and stored in a liquid form (LPG), and thus fuel energy can be stored in a relatively small space. Compressed natural gas (CNG), largely methane, is another gas used as fuel, but it cannot be liquefied by compression at normal temperatures, as these are well above its critical temperature.
Anthracite accounts for about 1% of global coal reserves, and is mined in only a few countries around the world. China accounts for the majority of global production; other producers are Russia, Ukraine, North Korea, South Africa, Vietnam, the UK, Australia and the US.he term is applied to those varieties of coal which do not give off tarry or other hydrocarbon vapours when heated below their point of ignition. Anthracite ignites with difficulty and burns with a short, blue, and smokeless flame.
Anthracite Coal Strike. The Anthracite Coal Strike (May-October 1902) began after mine operators refused to meet with representatives of the United Mine Workers of America. Anthraciteâor hard coalâwas solid and rich in carbon, ideal for industrial and domestic use. The strike began in eastern Pennsylvania, where almost all anthracite coal was mined at the time, on May 12, 1902, after the railroad companies which owned the mines refused to meet with representatives of the union.