April 25, 1913. THE COLLIERY GUARDIAN. 839 STONE DUST For Prevention of Coal Dust Explosions. SPECIAL PLANT Fox* the Production of Correct Fineness of Dust. ROBEY & CO. LIMITED, Globe Works, LINCOLN. John Russell & Co. Ltd., Alma Tube Works, 'W.SX.SAIjXj. | (TUBES and FITTINGS j | For Gas, Steam, Water, &c. WELDLESS STEEL TUBES for ENGINEERS, &C. GAUNT & HICKMAN British Oil Works, WOLVERHtnPTOX^ MANUFACTURERS OF Solidified Oils, Floating Grease, LOCOMOTIVE & ANTI-FRICTION GREASER SAFETY LAMP OIL GAS ENGINE AND COMPOUND ENGINE OILS. ROSIN DISTILLERS, PECKETT & SONS, Bristol. Speciality— TANK LOCOMOTIVES Locos, of various sizes specially designed for COLLIERIES. IRONWORKS, CONTRACTORS, &c„ always in Stock, Ready for Immediate Delivery. Photographs, Prices and Specifi- cations on application. Telegraphic Address—‘‘Peckett, Bristol.” Telephone—No. 6 Fishponds. Established 1864. WALKER’S PATENT DETACHING HOOK For the Prevention of Overwinding. For parficutars, apply to— THOS. WALKER A SOU LTD., 58, Oxford 8t., BIRMINGHAM. THE LEADING MINING JOURNAL OF THE WORLD. MINES AND MINERALS. AN ILLUSTRATED JOURNAL OF METAL AND COAL MINING. Published by the COLLIERY ENGINEER CO., Scranton, Penna., U.S.A. It does not publish generalities. It gives its readers Details. The largest and best journal of its class. Subscription, post paid . 10/6 per ann. KEGAN PAUL, TRENCH, TRUBNER & CO. LTD. Broadway House, 68-74, Carter Lane, London, E.C. “BRITISH PERMITTED EXPLOSIVES HAIL WOOD’S GAS CAP OBSERVATION MACHINE. The Strongest, Simplest and Most Accurate Machine for Training Firemen and Students. This Machine only needs a Gas and Water Supply. Motors, which are so apt to get out of order, are not employed. : Fracturite : Pitsea Powder : Britonite : THE BRITISH EXPLOSIVES SYNDICATE Ld. 134, ST. VINCENT STREET GLASGOW S -R