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Archive Reference / Library Class No.NCB/E/HIG/1/4
Former ReferenceD5298/6/13
TitleReport on Retreat Working of G30's Face High Moor Colliery, describing steps and procedures taken when longwall mechanised retreat mining was introduced
DateDec 1970
DescriptionProduced by W. Bridge, Civil Engineer Agent Manager, containing 9 pages of text, plust title and contents pages, and appendix of 19 drawings and illustrations
Extent1 item
LevelItem
RepositoryDerbyshire Record Office
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Archive CreatorHigh Moor Colliery
National Coal Board
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