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Amgueddfa Cymru – Museum Wales
Black and white 35mm film negative showing Maerdy Colliery, 1977. 'Mardy' is transcribed from original negative bag.
18A- showing a chock face. 25A-27A - three similar images showing a chain hauled shearer on the 'Red Horizon' seam, 1977. 28A-29A - showing a closer view of a chain hauled shearer on the 'Red Horizon' seam.