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| Colliery Engineering | December, 1933 |
The Harton Coal Co. Ltd. II
Drawings and Photographs accompanying the article
Fig. 4 — One of the two 4,000-kVA. 20,000-5,000 volt Brush Transformers, Boldon substation
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Fig. 4 — One of the two 4,000-kVA. 20,000-5,000 volt Brush Transformers, Boldon substation
Image Reference: L-00409-03-0065-F04
Article reproduced from a copy of the magazine held at Scottish Mining Museum, Newtongrange, Midlothian.
