Hi Bob
Long time ago but I cannot see that there is much in a carbide lamp.
I'd go to the Beamish Museum and see what they have.
Carbide lamps were common in 'non gassy' pits which were local in both our areas.
Me Dah had one at Greenside Colliery and I recall that the old motor bikes used them as standard.
The urine which was usually wanted, I guess that you'll have to find a more local supply

As kids we used to get scrap carbide that had been emptied at the old Catherine pit and we made carbide guns with pop bottles. You can guess the rest!
Cheers
Norm