I remember traveling from Indiana to Virginia via West Virginia and seeing the mountains/hills being stripped for the purpose of mining in 1968.
On a later trip back to that town in Pennsylvania, seeing my adoptive mother's cousin's house with outhouse, including a bathtub was interesting.
I heard a story about how my grandfather and his father-in-law found the mine scales unlocked. They found that the mining company had loaded a container for counterweights with rocks, so as to reduce the payment to the miners, as it looked as their loads were much lighter than they were.
Talk about outdated measures, or perhaps, outrageous measures.
There is a great movie from the 80's called Matewan. Stars James Earl Jones and Chris Cooper. It details miners struggles to unionize in Matewan WV and the subsequent Matewan Massacre.
It won an Oscar.
I've always been anti-union, but this move explains why they were needed at that period in time.