August 20, 1915. THE COLLIERY GUARDIAN. 353 f AIR PIPE MAN*? \\ BW.ST0H, STAFFORDSHIRE. Telephone No. 72 Bilston. COLLIERY OWNERS MANUFACTURING BRICKS SHOULD SUBSCRIBE TO THE BRITISH CLAY-WORKER The Organ of the Brick and Tile Trades. Published Monthly. Subscription: 8s. per annum, post free. Send for Specimen Copy to the Publisher, The BRITISH CLAY-WORKER, 43, Essex-St., LONDON, W.C. (OAN<;