Ever Seen the inside of an active Coal Mine? McClure #1 1980's just prior to the deadly explosion

This is a 'Longwall' mine which is entirely different from a 'block & pillar' mine. Basically there is a 'movable machine' that consists of a bi-directional continuous mining apparattus with linked system of supporting ajustsble jackstandsl which can remove an entire block of coal the size of a football field. Unlike a traditional block and pillar mine, in a longwall there is nothing left to support the roof, which is allowed to collapse after the machine advances. These mines are responsible for what the industry calls "subsidence", where soils, streams, and buildings above ground collapse as a result, and naturally the company has no liability for the destruction.
Footage is extremely rare; courtesy of my cousin, a union man who provided it for a documentary about the collapse of the United Mine Workers I made in 2005. not long after this was filmed, an expolsion occurred killing the first female miner in history. During the entire time the mine was open it averaged at least one fatality per year according to the Washington Post. The mine would briefly reopen before exploding a second time and being scuttled forever....if this was a 'union mine' where conditions were 'good' I can only imagine what the 'other' mines must have been like.

https://www.nytimes.com/1983/06/23/us/7-virginia-coal-miners-including-a-woman-die-in-shaft-blast.html