Moles, brown spots and growths on the skin are usually harmless â but not always. Anyone who has more than 100 moles is at greater risk for melanoma. The first signs can appear in one or more atypical moles. That's why it's so important to get to know your skin very well and to recognize any changes in the moles on your body.
The North Antelope Rochelle coal mine in the Powder River Basin of Wyoming, US, is currently the world's largest coal mine by reserve. The mine was estimated to contain more than 2.3 billion tonnes of recoverable coal as of December 2012. The mine is owned and operated by Peabody Energy.
Montana (with 942 coal miners) produces more coal than Virginia (with 5,262 coal miners). Wyoming (with 5,837 coal miners) produces more coal than West Virginia, Kentucky, Pennsylvania, Virginia, Alabama, and Illinois combined (with a total of 58,995 coal miners).