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As opposed to opencast mines, in underground mines the layers covering coal are not removed, coal is extracted from mine shafts.
underground mining, coal mine, coal, mine, adit, open-pit mining, extraction, seam, energy, railway, freight waggon, energy source, geography
At the end of the 18th century, mining boomed because of the great need for raw materials in the dynamically developing industry.
Thermal power stations convert energy released during the combustion of fossil fuels or renewable resources into electricity.
Aluminium smelting is the process of extracting aluminium from alumina by electrolysis.
Carbon is bound in organic substances during photosynthesis, while during breathing, it is released into the atmosphere.
The purpose of the electricity supply network is to provide electricity for consumers.
The Troll A is an offshore natural gas platform, the largest offshore platform ever built: it rises about 170 metres above water level, weighs 656,000...
A long pipe in the centre of the tower penetrates the ocean bed until it reaches the layer that contains oil.
As opposed to underground mines, in open-pit mines the layers covering coal are removed, coal is extracted on the surface.
This animation explains the technology of shale gas extraction.
A force can be measured by measuring the twisting of the torsion wire in a torsion balance.
Machinery that pumps crude oil to the surface