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Nôl i Ganlyniadau
National Coal Board Production Department
Diwydiant
A Design of Fan Drifts (booklet)
National Coal Board Production Department
2001.1/1043
Mwy am yr eitem hon
Diwydiant
Subsidence Engineers' Handbook (booklet)
National Coal Board Production Department
2012.45/14
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Diwydiant
Lining of sinking Shafts in Holland (booklet)
National Coal Board Production Department
2018.42/62
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Diwydiant
Dry Dust Suppression and Percussive Drilling (booklet)
National Coal Board Production Department
2018.42/118
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Diwydiant
Some methods of supplementing Boring Records (booklet)
National Coal Board Production Department
2018.42/85
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Diwydiant
Care and maintenance of Canvas Hose used for Fire Fighting (booklet)
National Coal Board Production Department
2018.42/73
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Diwydiant
Testing of Wire Ropes (booklet)
National Coal Board Production Department
2001.1/1035
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Diwydiant
Tub Traverser at Howe Bridge Colliery (leaflet)
National Coal Board Production Department
2018.42/76
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Diwydiant
Face Conveyor Signalling and Motor Control (booklet)
National Coal Board Production Department
2018.42/16
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Diwydiant
Electrical Accidents at Collieries, with special reference to the effects of Electric Shock (booklet)
National Coal Board Production Department
2018.42/146
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Diwydiant
Mine Car handling underground at Ledstone Luck Colliery (booklet)
National Coal Board Production Department
2018.42/81
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Diwydiant
Preservation of mining timber (booklet)
National Coal Board Production Department
2018.42/57
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