Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Number of Holes and the Charge per Round in Stone Drifts (booklet)
National Coal Board Production Department
(Publisher)
Full title - Estimation of the Number of Holes and the Charge per Round in Stone Drifts Employing a Wedge Cut. Information Bulletin No. 56/171. 5 pages.
Pwnc
Diwydiant
Rhif yr Eitem
2001.1/1038
Creu/Cynhyrchu
Derbyniad
donation, 1/2/2001
Mesuriadau
Meithder
(mm): 330
Lled
(mm): 202
Deunydd
Card
Paper
Metal
Lleoliad
In store
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