March 28, 1913. THE COLLIERY GUARDIAN, 629 7 W?LEWIS & SON , o < AIR PIPE MAN1S flj UX BltSTOU, STAFFORDSHIRE. A U Telephone No. 72 Bilston. OXYGEN. THE BRITISH OXYGEN CO. LTD., The oldest and most extensive Oxygen producing and distributing business in the World. Factories in all Industrial Centres equipped exclusively with modern liquid air plants producing Oxygen of unrivalled purity, the only residual being a trace of Nitrogen, as sanctioned and recommended by the Home Office Order of May 4th, 1912, for use with RESCUE APPARATUS. ADDRESSES OF THE COMPANY’S WORKS : LONDON.... Elvebton Street, Westminster, S.W. ,, ... Tunnel Avenue, East Greenwich, S.E. BIRMINGHAM Saltley Works. CARDIFF ... East Moors. MANCHESTER Great Marlborough Street. SHEFFIELD Celtic Works, Savile Street. NEWCASTLE- ON-TYNE... Boyd Street. GLASGOW ... Rosehill Works, Polmadie. W. G. ALLEN & SONS (TIPTON) LTD., Bradley Lane Works, Princes End, TIPTON, ► T5 < •O