Malik Hooker Womens Jersey  Black damp in a coal mine!

Black damp in a coal mine!

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Did you know?

Coal is the official state mineral of Kentucky.


About: Black damp in a coal mine!

Old timers used to have caged canary's.They get quiet and quit chirping, better check on them to make sure they're still alive.
The lamp with 19th century technology told you the air was bad before the 20th century electronic doohickey. Globe installed upside down with the graduations wrong btw...
Where can I get one of those lamps?
is there more blacl damp in the summer?
Super cool!

Coal stock

Coal is extracted from the ground by coal mining, either underground by shaft mining, or at ground level by open pit mining extraction.


Coal is primarily used as a solid fuel to produce electricity and heat through combustion. World coal consumption was about 7.25 billion tonnes in 2010 The price of coal increased from around $30.00 per short ton in 2000 to around $150.00 per short ton as of September 2008. In early 2015, it was trading near $56/ton.