Keith Hayes wrote
but this image is really helpful.
Good observations Keith,
image in my mind of yellow slickers and protective gear well if they were at the Face operating the Drills post "widowmakers", they would be, or in a very wet Mine. The Downtown mines were extremely wet, and required constant pumping below a certain depth, but whether the wetness required slickers in the Penrose, I can't say, the time period of operation seems rather early.
The image I posted was via the Yak Tunnel and I think was taken in the Penn group of mines(I didn't note it down).
reminded me that the haemrd hats would be the brown fiber stuff or aluminum rather than the bright yellow Just like the various time periods of the Loco Headlights and Stacks, the Hardrock Miners headgear changed in distinct decades, with some overlap and lingering of earlier styles.
Basically anything goes 'til around end of WW1 with the introduction of the hard leather cap, then in the '30s the "real" Hardhat, known as the "hardboiled" emerged, the aluminium versions being '50s onward.
** A recorded exception to this; the Clear Creek and Gilpin Tunnel Mine series of views in the DPL, show no hard hats on any of the crew, mid '20-s-early '30s.
EDIT:FACT CHECKED.Apparently I was looking at what may have been a "Survey" or "Sampling" crew as I found another set at the same place.
Senor Jodphurs is off the right in the full view.
Same goes for the Lighting as well; Candlesticks, Carbide, Electriclamps.
And Coal Miners were a breed apart in headgear shape, even in the Colorado coalfields.
At Creede Mining museum, they had an example of the '20s version.
UpSideDownC
in New Zealand