Coal Mining - robbing the pillars

In recent posts I have written about room and pillar mining, where the miners drive tunnels through the relatively horizontal coal seam, unt...

Coal mining - Mechanized Room and Pillar Mining

This is the next in the series of Tech Talks on Coal Mining, and I’m now going to move more into more recent mining, rather than dealing wit...

Early coal mining machines and their use

This is part of a series of Tech Talks that I write on Sundays. It is meant to provide some background information on the extraction of fos...