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Amgueddfa Cymru – Museum Wales
Typed in black ink on off-white paper. Headed paper -printed in black with the contact details of E.Ivor.David. A letter from E.Ivor David to D. Farr Davies of the Amalgamated Anthracite Collieries Ltd regarding a report on the steam consumption at Great Mountain Power Station. Dated 1st December 1928. Loose within a beige/light brown card file labelled 'general information file, power generation' and 'compressed air production.'
