July 17, 1914 THE COLLIERY GUARDIAN. 171 fi \ The Genuine Glass bears this Trade Mark. Insist on having it. registered TRADE MARK. DON’T BE SATISFIED with AS GOOD AS, but insist on getting APPROVED Resisto Glass Miner Lamp Glasses APPROVED RESISTO LAMP CLASSES are the clearest Miner Lamp Glasses on the market, and owing to special composition of the glass there is no loss of light. APPROVED RESISTO LAMP GLASSES ensure therefore the highest possible lighting efficiency of your lamps. APPROVED RESISTO LAMP GLASSES are always of uniform quality and, therefore, never fail. APPROVED RESISTO LAMP GLASSES can be supplied promptly in large quantities at the rate of 20,000 pcs. per week. APPROVED RESISTO LAMP GLASSES are always to be relied on, and all consignments conform with the Home Office regulation. if you wish to have the best lighted collieries and reduce cost of maintenance, use exclusively APPROVED RESISTO LAMP GLASSES. FOR FULL PARTICULARS AND PRICES— — Apply to the Miner Lamp Manufacturers of Great Britain. Divert Hot Gases against Tube Plate of Boiler. Patent Fire Brick Cones “ ’TZ/'/FZ SECTION. FOR PRICES AND PARTICULARS WRITE— FLUE. Messrs. JOHN KNOWLES & Co. (Wooden Box) Ltd Wooden Box, nr. BURTON-on-TRENT, '7777777777777, Patent “ Accessible ” Flue Covers and Small Surface Contact Seating Blocks. Space filled with broken clinker & ashes. Stops air leaking, into side flue. Cones are in 4 pieces and may 7\ be fixed in one hour when cleaning flues* They may be turned half round on swivel / provided* Increases Circulation at rear end of boiler* Lowers waste gas temperature and saves fuel* Cones as seen through furnace tubes. CORRUGATED and FLAT SHEETS and GALVANISED GOODS; TUB & CORNER PLATES; AIR PIPES and all Colliery Requirements. J. SUMMERHILL & CO., Beaver Works, WOLVERHAMPTON. 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. KEG AN PAUL, TRENCH, TRUBNER & CO. LTD. Broadway House, 68-74, Carter Lane, London, E.C. “SHELTON” IRON. SHELTON” STEEL . “GRANVILLE” PIG IRON Steel Pit Girders & Colliery Rails a Speciality; also High-class Bar Iron for Couplings, &c. IRON & STEEL BARS, ANOLES, TEES, CHANNELS, GIRDERS, PLATES & SHEETS, STEEL BILLETS, BLOOMS & SLABS. First-class Medals— Paris, 1885; London, 1862. 66 Gold Medals— Paris, 1878; Melbourne, 1881. Enquiries to— ' THE SHELTON IRON, STEEL & COAL CO. LTD., t™— Or 122, Cannon Street, London, E.C. Telegraphic Address: “ Shelton, Stoke-on-Trent.” Tel. No. 11 and 253. | Telegraphic -^Iress: « Sheltonian, London/* Tel. No. 886 Bank. We have Specialised in this class of Machinery, and have designed and made more than all other firms combined References to users are invited. Established 50 Years. “ANTHRACITE COAL BREAKING SIZING AMD • WASHING PLANT rSHEPPIROMS) ' LTD., BRIDGEND, ' SOUTH WALES)