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The Ventillation of Headings (booklet)
Information Bulletin No. 60/220. 15 pages, 34 graphs, an appendix and an amendment.
Collection Area
Industry
Item Number
2018.42/176
Creation/Production
National Coal Board Production Department
Date: 1960
Acquisition
Old stock, 26/1/2018
Measurements
Length
(mm): 331
Width
(mm): 204
Material
card
paper
metal
Location
In store
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