May 25, 1917. THE COLLIERY GUARDIAN. 1009 co SOODALL, CLAYTON & Go. Ln LEEDS. Telegrams :— “ Vertical, Leeds.” Telephone:—1982, Leeds. SOLE MAKERS F. REDD AWAY & 1°° PENDLETON, MANCHESTER. LONDON OFFICE 5O/l LIME ST.,E.C. MAKERS AND ERECTORS OF SCREENING PLANTS, PICKING BELTS, SCREENS, PITHEAD GEARS. BUNKERS, ROOFS, STEEL STRUCTURAL WORK, &c. GAS RETORT INSTALLATIONS, CONVEYING PLANTS. Representatives:—H. L. CHESTON, Clarendon House, Boston Spa, Yorks. W. OGDEN DAYSON. 1. Mount Street. Swansea, for South W#J@> ANNALS OF COALMINING & THE COAL TRADE Bt Post, 25b. 94. By ROBERT L. CALLOWAY. Price ags. net. The Colliery Guardian Co. Ltd., 30 & 31. Furnival Street, Holborn, London, E.O 4 E. C. THEEDAM LTD. DUDLEY, Wore., Factors and Manufacturers of Colliery Requisites. Mechanical & Electrical SIGNAL BELLS. Ordinary and Indicating Signal Bells (Mechanical and Electrical) with Indicator and Non-accumulative Ringing Lever or Key, ELASTIC ENAMELLED PLATES FOR NOTICES IN COLLIERIES & MINES. Abstract of C.M.R. Act, General Regulations, Signals (Winding, Sinking & Haulage), Electricity Notices, Restoration Plates, &c. Coal Baskets, Steel Chimneys, Coal| 8 t Rakes, Elevator Buckets, Mining Kibbles, Haulage Clips, Barrows, Pit Tubs, &c. ---'I, I ■ ■■■■■. J...r.------- COLLIERY AIR PIPES. H , --------------—Asa^sa-J DON’T WASTE TIME use FASTNUTS No TROUBLE to FIT or REMOVE. No damage to bolt. Specified and used by the War Office AND Admiralty. and SAVE TIME & MONEY. One firm use over 200,000 monthly. IN USE on over 60 Collieries. SAMPLES, Calendar and Matchcase, FREE. We develop and purchase good mechanical patents. “ FASTNUT " Ltd., 115, Newgate St, London, E.C. 1 Malleable Iron Castings] STEEL ALLOY CASTINGS I. Rr@m & Wade AIR COMPRESSORS THOMAS L. HALE LTD., WALSALL, Staffordshire. ----- ON ADMIRALTY AND WAR OFFICE LISTS. -------- _ . , . ('"Hale, Founders, WalsalL" Telenhene fWalaall, 408 (pte. ex.) Telegraphic Manchester." nJ.? 1 Manchester, 20, Pendleton. Addresses: Fairman, Glasgow." ' (.Glasgow, 210, Central. Totally Enclosed and Perfectly Dustproof. Need the minimum of attention. THEY ARE Particularly suit- able for working in Dusty situations. EFFICIENT DURABLE e ACCESSIBLE SIZES : 5 to 1,000 c. ft. ANY DRIVE, Fixed or Portable. MICHELL PATENT THRUST BEARINGS. WORKS: High Wycombe. HYATT ROLLER BEARINGS.