cool things with wheels, since 2006
Read the text in the photo "steam shovel operated by air". There will be a line to a compressor somewhere.
Ah! good point! Thanks!
I also read the text on the photo "Main borxxx qn.ay new 8 mile tunnel"... I am confused how you came to conclude that it was a coal mine, when the link only talks about the tunnel?This is a photo of men digging the "New" Cascade Tunnel which opened in 1929.
I see... good catch! I made the mistake of following along with the narrative of the website this was clipped from http://www.blackdiamondnow.net/black-diamond-now/page/33/ and if you click on that page, you see why I was thinking darn near everything was coal related. Thanks for the correction!