January 30, 1914. THE COLLIERY GUARDIAN. 275 REGISTERED TRADE MARK. The Genuine Glass bears this Trade Mark Insist on having it. DON’T BE SATISFIED with r iTg I AS GOOD AS, but insist on getting > APPROVED Resisto «.) Glass Miner Lamp Glasses. RESISTO MINER LAMP GLASSES have passed the British Home Office Heat, Chill and Drop Tests at Eskmeals. They are ground perfectly true and accurate. RESISTO MINER LAMP GLASSES are always of uniform quality and, therefore, never fail. RESISTO MINER LAMP GLASSES can be supplied promptly in large quantities at the rate of 20,000 pcs. per week RESISTO MINER LAMP CLASSES are always to be relied on, and all consignments will conform with the Home Office regulation. PRICES FOR RESISTO MINER LAMP CLASSES compare favourably with other makes on the market. If you wish to reduce cost of maintenance and avoid complaints, use RESISTO MINER LAMP CLASSES exclusively. FOR FULL PARTICULARS AND PRICES - Apply to the Miner Lamp Manufacturers of Great Britain. CRAVEN’S PATENT —___' i,x... —J 1 ........ -a •.. BRIQUETTING MACHINE. SPECIALLY DESIGNED FOR PRODUCING LARGE BRIQUETTES FOR MARINE AND INDUSTRIAL USE. EXERTS HEAVIER PRESSURE and GIVES BETTER RESULTS than any other-either British or Continental. BRADLEY & CRAVEN Ltd., wakefield. Merry weathers’ Patent “HATFIELD PUMP For Fire Protection, Boiler Feeding, III Draining, &c. COMPACT. LIGHT. ECONOMICAL. MERRYWEATHF.S LONDON - r_ ‘ Can be driven by any motive power. An Engineer writes“ I am pleased to inform you that the ‘ Hatfield ’ Pump is working splendidly. I have never had the least trouble with it in any way since it was fixed.’1 WRITE FOR PAMPHLET 193P. MERRYWEATHER & SONS, L3i°wAcCBE' “The Shipping World.” Weekly. Illustrated. Sixpence. 'T'HE issues of January 7th and 14th, 1914, very much enlarged, constitute the 31st Annual Illustrated Report The two numbers are profusely illustrated, and THE STORY OF THE YEAR MAY BE READ FROM THE ILLUSTRATIONS ALONE. They contain articles on:— The World’s Shipbuilding in 1913. A Review of the Industrial Year 1913. A Survey of Ship Construction and Propulsion in 1913. Concerning the Panama Canal. Anti-Rolling Tanks. Aeroplanes and Hydroplanes. Armed Merchantmen. Ships Launched in British Yards for H.M.’s Navy and Foreign Governments in 1913. Marine Engineering and Subsidiary Industries during 1913. Reports from the Shipbuilding Centres for 1913. Marine Insurance in 1913 The Shipowner and Freights in 1913. Ship Sales and Contracts in 1913. The two enlarged numbers, in the Uhited Kingdom, 1/2; To Foreign Countries, 2/- including postage. The “SHIPPING WORLD” Offices, Effingham House, Arundel Street, Strand, London, W.C. Alien’s Special Plant for making STONE DUST Read the following note on the use of Stone Dust for preventing Colliery Explosions:— It is strange indeed to find how great a difficulty many colliery officials have had, and have, of grasping the ease of application of this preventive. They have no difficulty whatever in coming to an understanding about water, but with dust it seems quite another thing, whereas in principle the two may be looked upon in exactly the same light. If, mentally, incombustible dust is substituted for water, and regarded as a quencher, the whole difficulty disappears. Pour a stream of water upon a fire, and the flame is put out. Pour also a stream of dust upon it, and the same result follows. Moisten coal-dust with water, and it cannot be inflamed. Do so with incombustible dust, and there is the same effect— with this important difference, however : coal-dust wetted with water will dry again ; but when “ wetted ” with incombustible dust it will be safe for ever. By the rapid absorption of heat both water and incombustible dust become quenching agents, and act as oxygen excluders. The use of water depends on the continued care of human agency, which may, and does fail, but the guarding care of incombustible dust is automatically constant. Let every cranny and ledge in both roof and sides therefore contain incombustible dust rather than coal-dust, and when once the first-named is in place, there will be no room for the latter ; it will remain always on guard, a perpetual watcher against the miners’ fiery enemy.— Mr. W. C. Blackett, Inst. Mining Engineers, April I2th, 1913. Don’t delay, write at once for full particulars! Edgar Allen & Co. Limited, IMPERIAL STEEL WORKS, SHEFFIELD.