Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
The Safe Use of Explosives in Coal Mines (booklet)
Black print on red card cover. What Every Mining Man Should Know, No. 4 - 'The Safe Use of Exposives in Coal Mines.' Issued by the Safety in Mines Research Board. Dated 1931. 63 pages with b & w photographs and diagrams throughout.
Pwnc
Diwydiant
Rhif yr Eitem
87.96I/460
Mesuriadau
Meithder
(mm): 246
Lled
(mm): 186
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