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New Tredegar Colliery, technical drawing
Full title - Messrs The Powell Duffryn Steam Coal Co. New Tredegar. Proposed Arrangement of New Air Cylinders to Existing Air Compressor Fitted with "Borsig" Valves. Scale ½ inch to 1 foot. Dated 9 Oct. 1912. Purple ink stamp bottom right of Yates & Thom. Ltd., Blackburn.
Collection Area
Industry
Item Number
70.93I/1
Acquisition
Donation, 25/11/1970
Measurements
Length
(mm): 638
Width
(mm): 990
Techniques
blueprint
Material
paper
Location
In store
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