0
There are two primary methods of mining coal, surface mining and underground mining. There are over 1,000 surface mines and more than 1,000 underground mines in the US. Underground mining is more difficult and requires more miners, but much of our best coal is underground. Mining has become much safer and more efficient over the years. In 1980 there were over 220,000 coal miners in the country. Today there are fewer than 100,000. But while 1980 production was about 800,000 tons, today we produce over 1 billion tons with fewer than half the number of miners.
In recent years surface mining in Wyoming has mushroomed, making that state the leading coal producer at almost 300,000 tons per year. West Virginia and Kentucky, the traditional leaders, with both underground and surface mines, each produce around 170,000 tons.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
When did Court of Coal Mines Regulation of New South Wales end?
Court of Coal Mines Regulation of New South Wales ended in 2006.
When was Court of Coal Mines Regulation of New South Wales created?
Court of Coal Mines Regulation of New South Wales was created in 1982.
Why was south wales a good place to have coal mines?
Because that is where the coal deposits were to be found.
In which two states are opal mines?
There are opal mines in three states - Queensland (Yowah), New South Wales (Lightning Ridge and White Cliffs) and South Australia (Coober Pedy).
How many countries are in new south wales?
There are no countries in New South Wales. It is a state in Australia.
What has the author C J Sullivan written?
C. J. Sullivan has written: 'Geology of New Occidental, New Cobar and Chesney Mines, Cobar, New South Wales' -- subject(s): Geology, Gold mines and mining, Copper mines and mining, Silver mines and mining
What is Wales importance?
Over the industrial age in Britain, Wales had many coal mines, children and adults where forced to go down these mines to get coal and make money for their families. Now people in Wales just live normal lives. Shopping, working, eating, sleeping, etc...
Is there surfing in New South Wales?
Yes, surfing is quite popular in many of the coastal areas of New South Wales.
How many Wales are alive today?
One. North Wales is dead, South Wales can be pretty lively at weekends.
Where are the biggest coal mines in the world?
Wales,Poland and Scotland
Is Cardiff in the north or south of Wales?
Yes - of Wales.
Are there gold mines in South Africa?
Yes, there are gold mines in South Africa.
