The stone is a type of fuel oil and minerals in the form of an organic substance by schist, called kerogen mingle in the rock is typically dark brown to black. Pressure and temperature, causing metamorphism causes rubber style where're consists of hydrocarbon molecules which are called "kerogen" which when burnt oil stones at about 500° c. That this extraction process rather than regular crude oil on the oil industry, the stone can also be burnt as fuel directly, but the low grade category as fuel for electricity and heating. The oil rocks is interested in alternative energy sources in addition to petroleum coke at the same time, quarrying and oil extraction, burning of liquid hydrocarbons regardless of the environment, land use, waste disposal, because. Shall be ninety percent waste, which can affect the environment. To get rid of waste water, greenhouse gas emissions and air pollution in Estonia and China. The stone industry is oil. Best country Brazil,Germany, Israel and Russia It takes advantage of the oil rocks.
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