COAL. Ingrid Sullivan, Alex Gotsky , Michael Bradac. How it’s Made. Coal is formed from the remains of vegetation that grew as long as 400 million years ago. As plants and trees die the remains sink to the bottom of the swampy areas accumulating layer upon layer.
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Ingrid Sullivan, Alex Gotsky, Michael Bradac
All over the world.
Bituminous- is the most plentiful coal in the United states of America. It is used to generate electricity. Bituminous has carbon from 46 to 86 percent and heat value of 10,500 to 15,500-per-pound.
Lignite- has carbon from 25-35 percent and heat value between 4,000 and 8,300 per-pound.
Anthracite- has the highest carbon content between 86 and 98 percent and heat value between 1,500 per-pound. 73 billion tons reserved in the United States of America, mostly in the northeastern countries.
Subbituminous- has 35-45 percent carbon and heat value between 8,300 and 13,000 per-pound. Located in western states like Alaska.
To dig up coal, we have to create mines which can be dangerous and not very nice to look at.
Transporting coal by lorry and train from the mine to the power station causes pollution.
Burning coal produces polluting gases like sulphur dioxide which make acid rain.
Of all energy sources, burning coal releases the most greenhouse gases which may add to global warming.
Coal miners can be affected by black lung disease or pneumoconiosis and also emphysema if they breathe in too much of the coal dust.
Coal mining can scar the landscape and the equipment used for mining is large and noisy which may affect local wildlife.
Coal is a nonrenewable resource because it takes millions of years for it just to form and then you have to go through the hole energy process.
Assuming there were no new findings of coal, the present amount would last 137 years at the rate of use of it today.
Smith, Rachel. “The Facts on Coal” New York Publishing Company http://library.thinkquest.org/6075/coal.html
Hansen, Thomas. “Commerce State and Coal Mining”
Campbell, Evan. “Ohio Valley Coal”
“History of Coal” http://www.ohiocoalrollers.com/
Hartmen, Rachael.“Coal Facts”