Search results
Results from the WOW.Com Content Network
Minecart levels, a term used for levels in which the player takes a high-speed ride in a minecart, common level in video games, especially side-scrolling video games such as Donkey Kong Country [7] and Fantastic Dizzy. A minecart is also featured in two scenes of the 2005 animated film Hoodwinked!.
Lignite (derived from Latin lignum meaning 'wood'), often referred to as brown coal, [1] is a soft, brown, combustible sedimentary rock formed from naturally compressed peat.It has a carbon content around 25–35% [1] [2] and is considered the lowest rank of coal due to its relatively low heat content.
Raw coke. Coke is a grey, hard, and porous coal-based fuel with a high carbon content. It is made by heating coal or petroleum in the absence of air. Coke is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges.
An anthracite pile in Trevorton, Pennsylvania. Anthracite derives from the Greek anthrakítēs (ἀνθρακίτης), literally "coal-like". [9] Other terms which refer to anthracite are black coal, hard coal, stone coal, [10] [11] dark coal, coffee coal, blind coal (in Scotland), [7] Kilkenny coal (in Ireland), [10] crow coal or craw coal, and black diamond.
The giant bucket-wheel excavators in the German Rhineland coal mines are among the world's biggest land vehicles. Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, [1] is a surface mining technique that extracts rock or minerals from the earth.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Coal mining is the process of extracting coal from the ground or from a mine. ... (1,000–1,500 feet) below ground level, for instance Tagebau Hambach in Germany. ...
Coal liquefaction is a process of converting coal into liquid hydrocarbons: ... The process was scaled-up to the 6 ton per day level, but not proven commercially.