Danny McG
The Federation needs you!
Back in mid seventies I was a trainee in a UK coalmine. In one area of older workings there was a row of lights giving off a strange blue glow.
As far as I recall each light had an enclosed turbine/dynamo that was powered by compressed air.
I remember some old collier saying they'd been operating since the fifties in that area.
I've googled and you can still get compressed air lamps but these ones are hand held for inspection work inside oil tanks etc, the ones I saw were large and permanently mounted.
Just another bit of forgotten technology. No doubt the manufacturer has long since gone - very little coalmining now
As far as I recall each light had an enclosed turbine/dynamo that was powered by compressed air.
I remember some old collier saying they'd been operating since the fifties in that area.
I've googled and you can still get compressed air lamps but these ones are hand held for inspection work inside oil tanks etc, the ones I saw were large and permanently mounted.
Just another bit of forgotten technology. No doubt the manufacturer has long since gone - very little coalmining now