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| Colliery Engineering | November, 1933 |
The Harton Coal Co. Ltd.
Drawings and Photographs accompanying the article
Fig. 10 — View of dust-proof chamber showing pneumatically operated doors
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Fig. 10 — View of dust-proof chamber showing pneumatically operated doors
Image Reference: L-00408-03-0065-F10
Article reproduced from a copy of the magazine held at Scottish Mining Museum, Newtongrange, Midlothian.
