Coal the heat and pressure of deep burial causes the loss of water, methane and carbon dioxide and an increase in the proportion of carbon. Thus first lignite (also called "brown coal"), then sub-bituminous coal, bituminous coal, and lastly anthracite (also called "hard coal" or "black coal") may be formed. The wide, shallow seas of the Carboniferous Period provided ideal conditions for coal formation, although coal is known from most geological periods. The exception is the coal gap in the Permian–Triassic extinction event, where coal is rare. Coal is known from Precambrian strata, which predate land plants—this coal is presumed to
John A. Burns John A. Burns John Anthony Burns (March 30, 1909 – April 5, 1975) was an American politician. Burns was born in Montana and soon became a resident of Hawaii in 1923. He served as the second governor of Hawaii from 1962 to 1974. John Burns was born in Fort Assinniboine, Montana on March 30, 1909. He was the eldest son of Anne and Harry Burns. Christened Harry John Burns, as a teenager he changed his name to John Anthony Burns. Burns’ father was in the army and was ordered to Fort Shafter in Hawaii, so in 1913 he and his