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Amgueddfa Cymru – Museum Wales
Full Title - 'Statutory Rules and Orders 1935 No.636 Coal Mines. The Firedamp Detectors (No.1) Order, 1935. Dated June 24, 1935.' One page document on off-white paper, with black printed text. Loose inside a black leather hardback cover (with other coal mining regulations, bills etc) with the 'British Thomson-Houston Company / Electrical Engineering Manufacturers / Rugby' printed on it, and a sticker with 'Coal Mines Regulations' stuck on the front cover.
