Anthracite Mohs scale), its higher relative density of 1.3–1.4, and luster, which is often semi-metallic with a mildly brown reflection. It contains a high percentage of fixed carbon and a low percentage of volatile matter. It is also free from included soft or fibrous notches and does not soil the fingers when rubbed. Anthracitization is the transformation of bituminous coal into anthracite. The moisture content of fresh-mined anthracite generally is less than 15 percent. The heat content of anthracite ranges from 22 to 28 million Btu per short ton (26 to 33 MJ/kg) on a moist, mineral-matter-free basis. The heat content
Night of the Big Heat (film) which also creates enough heat to ignite the car's petrol tank. Meanwhile, another pub regular, losing his mind because of the heat, attempts to attack Angela whilst she's working, but when she brains him with an ashtray he flees and ends up burned to death as well. Jeff finally corners Hanson and demands answers from him. According to the scientist, Fara Island is the site of an invasion by extraterrestrials, whose extremely high temperature burns any living creature that gets too close to them. Jeff and Hanson resolve to stop the aliens with the help of local physician Dr. Vernon