[spacecowboy_lon]

They meant in the industrial relations sense of being "dirty" Jobs which traditionally came with a premium - sewer workers dustmen steel workers both because its unplesant work and there s also a risk premium.

Its why a pit deputy (coal miner) in the UK can charge £2k for a single weekend shift.

[arethuza]

I don't think there are any "pits" in the UK anymore - the last deep coal mine closed at the end of 2015:

http://www.theguardian.com/environment/2015/dec/18/kellingle...

[spacecowboy_lon]

Ah this might have been before that i was at a training course for TUPE and some of the senior Union Guys where there on the same course.