SONS OF TOIL



Some causes of ignition leading to pit disasters:



1      shot firing

2      blown-out shot

3      naked light

4      gob fire

5      contraband

6      lighted candle

7      match

8      safety lamp

9      Clanny Lamp

10     Davy lamp

11     underground smithy

12     frictional heat

13     spontaneous combustion

14     flames from furnace

15     stones falling on stones

16     fire in old workings

17     naked light igniting timber

18     friction of the picks in the cut

19     flame of open acetylene cap lamp

20     electric cap-lamp headpiece

21     sparks from cutter picks striking pyrites

22     frictional heat from a piece of falling quartzitic rock

23     shot firing in waste

24     burning fuel

25     permitted explosive



source: Durham Mining Museum; thanks to N