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|Extraction of coal|
Formation of Coal
Diagram showing the slow formation of coal
Formation of Oil
|Extraction of Coal||
Often we can get to the coal from the surface (e.g. Open cast mining) but at other times we need to sink mine shafts to reach the coal.
Mining can be a dangerous occupation
Extraction of Oil
Oil production often takes place in hostile environments - eg in the desert or at sea.
This adds to the cost of producing oil. We are looking in all these places because oil is so valuable - and it is becoming scarce.
Peak oil means the time when the maximum rate of oil production has been reached.
Many experts think we have reached that point