0
Add your answer:
Earn +20 pts
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.
Did every mine have a shaft?
No, not every mine had a shaft. Some mines used adits, which are horizontal tunnels dug into the side of a hill or mountain to access the mineral deposits underground. Adits were particularly common in hilly or mountainous regions where it was easier to dig horizontally than vertically.
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.
Where are coal mines located?
Coal mines are located underground
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.
How many uranium mines are there?
In the United States, as of 2008, there were 17 sources, and 10 underground mines. http://www.eia.doe.gov/cneaf/nuclear/dupr/umine.html
What is SIC 1222?
includes establishments primarily engaged in producing bituminous coal in underground mines or in developing bituminous coal underground mines.
Is it possible to have a completely underground city?
Easily- many mines have people in them around the clock for years.
