Take a look at 25 colorized photos from the early days of coal mines, showing workers, conditions, and daily life underground ...

In the early 1840s, a group of businessmen in the Philadelphia area became aware of stories of untold wealth of cannel coal, a very special coal which would also yield coal oil, which existed in the ...

These photos document the working conditions, routines, and daily realities of early coal mining communities. Long before modern machinery and safety standards, miners of all ages worked in difficult ...