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    Archive NumberTitleLevelDescriptionMediumImagesArchive Number6044316TitleBCC - British Coal Microfiche CollectionLevelCollectionDescriptionCollection of microfiche aperture cards from British Coal showing architectural and engineering drawings relating to a number of colliery sites in north east and south Wales; very basic list created by British Coal.MediumPhoto.ImagesnArchive Number6487639TitleTCDC - Tredomen Colliery Drawings CollectionLevelCollectionDescriptionGroup of drawings showing details of 'manriding cars' and hydraulic systems that could be used by miners in the collieries.Medium12 drawings.ImagesnArchive Number6487640TitleTCDC_01 - Tredomen Colliery Drawings CollectionLevelItemDescriptionDrawing on film of Hydraulic Circuit Diagram for Leading Master Car typeMediumImagesnArchive Number6487641TitleTCDC_02 - Tredomen Colliery Drawings CollectionLevelItemDescriptionDrawing on film of Hydraulic Circuit Diagram for Leading Car type. Scale 1:8.MediumImagesnArchive Number6487642TitleTCDC_03 - Tredomen Colliery Drawings CollectionLevelItemDescriptionDrawing on film of Hydraulic Circuit Diagram for Trailing Car type. Scale 1:8.MediumImagesnArchive Number6487643TitleTCDC_04 - Tredomen Colliery Drawings CollectionLevelItemDescriptionDrawing on film of Hydraulic arrangement for Leading Car type 3/24 or 2/16 (medium).MediumImagesnArchive Number6487644TitleTCDC_05 - Tredomen Colliery Drawings CollectionLevelItemDescriptionDrawing on film of Hydraulic arrangement for Trailing Car type 3/24 or 2/16 (medium).MediumImagesnArchive Number6487645TitleTCDC_06 - Tredomen Colliery Drawings CollectionLevelItemDescriptionDrawing on film of section views of assembly of worm and wheel box for parking brake on manriding cars.MediumImagesnArchive Number6487646TitleTCDC_07 - Tredomen Colliery Drawings CollectionLevelItemDescriptionDrawing on film of proposed specification for running height of manriding car (low and medium type car).MediumImagesnArchive Number6487647TitleTCDC_08 - Tredomen Colliery Drawings CollectionLevelItemDescriptionDrawing on film of sections, details and components of manriding cars.MediumImagesn