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National Coal Board Production Department
Diwydiant
The Ventillation of Headings (booklet)
National Coal Board Production Department
2018.42/176
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Diwydiant
Suppression of Shot-Firing Dust with Water Ampoules (booklet)
National Coal Board Production Department
2018.42/191
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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
Reorganisation of Pit Bank and Pit Bottom at Chislet Colliery (booklet)
National Coal Board Production Department
2018.42/24
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The Holman P.W.2 "Autolock" Wet Pick (booklet)
National Coal Board Production Department
2018.42/147
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Diwydiant
Statistics relating to Mechanised Output first half of year 1959 (booklet)
National Coal Board Production Department
2018.42/170
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Diwydiant
Wire Mesh Lagging for Roadway Supports (booklet)
National Coal Board Production Department
2001.1/1039
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Diwydiant
Hausherr Drilling Rig (booklet)
National Coal Board Production Department
2018.42/79
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Diwydiant
The Huwood Slicer-Loader (booklet)
National Coal Board Production Department
2018.42/152
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Diwydiant
The Ventilation of Headings (booklet)
National Coal Board Production Department
2018.42/61
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