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How many underground mines are there in Australia?
There are too many underground mines to list. Australia is very rich in mining resources.
How did they mine salt in the past?
In underground mines, as today in many mines.
How many underground mines did PA have in 2001?
Pennsylvania (73 underground mines, 58.1 million short tons).
What are the attrition rates for underground mines?
In 1998 there were about 860 underground coal mines in operation. By 2001 that number had declined to 719 underground mines.
How many underground mines are there in the U.S.?
In 2001 there were 719 underground coal mines in the United States, which produced 380.6 million metric short tons.
How many types of mines are there in the world?
There are various types of mines in the world, including open-pit mines, underground mines, placer mines, and drift mines. Each type of mine is designed for different geological conditions and extraction methods.
What can be mined underground?
Just about any mineral or metal can be mined underground or at the surface. Some typical underground mines may include gold, silver, coal, uranium, limestone, and salt. Many gemstones such as opal, diamond, emerald, ruby and sapphire are found in underground mines.
What happened in Kentucky in the book Underground to Canada?
In the book "Underground to Canada," Kentucky was where the character Julilly and her friend Liza escaped from slavery on their journey to freedom in Canada. They faced many dangers and challenges, but ultimately found help from sympathetic individuals along the Underground Railroad network. Kentucky was a pivotal point in their escape and symbolized the risks and hardships faced by many enslaved individuals seeking freedom.
Is it possible to have a completely underground city?
Easily- many mines have people in them around the clock for years.
What is SIC 1222?
includes establishments primarily engaged in producing bituminous coal in underground mines or in developing bituminous coal underground mines.
What state has the most underground mines?
West Virginia leads the nation in underground coal mining with 193 underground mines that produced 99.6 million metric short tons in 2001.
Where in Britain can you find underground salt?
You can find it in the underground salt mines in England
