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Chwilio
Nôl i Ganlyniadau
National Coal Board Production Department
Diwydiant
A device for negotiating Face disturbances with a Scraper Chain Conveyor (booklet)
National Coal Board Production Department
2018.42/36
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Diwydiant
Statistics of Mechanised Output for the year ended March 1966 (booklet)
National Coal Board Production Department
2018.42/204
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Diwydiant
Investigation of Mining Subsidence Phenomena (booklet)
National Coal Board Production Department
2018.42/63
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Diwydiant
Skip Winding Installations in Great Britain (booklet)
National Coal Board Production Department
2018.42/58
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Diwydiant
The 7-Inch Heavy Armoured Flexible Conveyor (booklet)
National Coal Board Production Department
2018.42/163
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Diwydiant
Plans relating to Tub or Mine Car Circuits (booklet)
National Coal Board Production Department
2018.42/96
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Diwydiant
Portable Fire Extinguishers for use underground (booklet)
National Coal Board Production Department
2018.42/8
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Diwydiant
Non-Breathing Flameproof Motors (booklet)
National Coal Board Production Department
2018.42/153
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Diwydiant
Tracklaying for underground haulage (booklet)
National Coal Board Production Department
Hazel Watson and Viney Ltd.
2001.1/838
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Diwydiant
Rotary Boring of large holes underground (booklet)
National Coal Board Production Department
2018.42/49
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Diwydiant
Dowty Props (booklet)
National Coal Board Production Department
2018.42/60
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Diwydiant
Statistics relating to Mechanised Output (booklet)
National Coal Board Production Department
2018.42/159
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