I've only recently found out that "Graces Guide" has digitized a large range of "The Engineer" from 1862 to 1926, allbeit with some gaps. It's a fascinating treasure trove of Engineering from the steam and water era into the Electric era. OK, not directly underground, though there are articles and supplements on mining engineering, and pumping and other machines make regular appearances, as does the Victorian channel tunnel project (Somewhat scathingly!).
So far I've found an article on the Hunter Saw, a patent slate dresser, various Davey pumping engines, various narrow gauge locomotives and a turbine driven pump at Welsh Slate Company (predeccesor of Oakeley) to name but a few.
If you're into nistorical engineering or machines this is another great online resource.
http://www.gracesguide.co.uk/The_Engineer_ (Bound_Volumes)
The map is the territory - especially in chain scale.