1148 ___________________________________________________________________________________________________________ THE COLLIERY GUARDIAN June 7, 1918. CONTENTS. Editorial Articles:— Page The Case of the “Leonora”................... 1149 Economy in Coal Combustion................. 1149 Articles :— Overhead Koepe Winding Plant at Plenmeller Colliery, Haltwhistle...................... 1141 The King’s Birthday Honours ............... 1143 Works Committees ........................ 1143 North of England Institute of Mining and Mechanical Engineers .................... 1144 Alteration in the London Delivery Prices _____ 1144 Compressed Air Centrifugal Pump ........... 1145 Electric Power Supply ...................... 1145 The American Coal Trade ................... 1145 The Coal Deposits of China..................... 1145 Mine Managers’ Examinations ............... 1146 English Miners’ Wages .................... 1146 The German Coal and Iron Trades.........__ 1147 Mining Industry and Military Service......... 1147 Permitted Explosive........................ 1147 Air Receiver Explosions .................... 1150 South Wales Mining Timber Trade ........... 1153 Silica Bricks .............................. 1153 Labour and Wages ........................ 1153 Mean Magnetic Declination..............__ 1155 Book Notices .............................. 1155 Government and Re-Afforestation............. 1158 Open Contracts ............................ 1158 The Freight Market ........................ 1158 Abstracts of Patent Specifications Recently Acptd. 1160 New Patents Connected with the Coal and Iron Trades .................................. 1160 Publications Received ...................... 1160 Letters to the Editors:—Magnetic Declination ... 1155 The Coal and Iron Trades ...............1150—1152 The London Coal Trade ..................... 1153 The By-Products Trade .................... 1153 The Tin-plate Trade_______......................... 1153 Monthly List of Recent Coal Literature...... 1156 Law Intelligence _____.......................... 1153 Parliamentary Intelligence................... 1154 Notes from the Coal Fields....,............... 1154 Coal, Iron and Engineering Companies......... 1158 Miscellanea :— Coal Mining in Brazil ...................... 1143 Pulverised Coal as Bunker Fuel............... 1144 Winter Coal Rationing—Coal in Peru—Large Gas Engines in Colliery Power Station....... 1145 Coal Freight Brokerage—Dutch Coal Output... 1147 Shorter Working Day in Canada—Escape Holes for Coal Trimmers........................ 1150 Middlesbrough Iron and Steel Shipments ..... 1152 Building After the War .................... 1155 Mexican Coal .............................. 1158 VIVIANS BORING COMPANY WORK GUARANTEED Qeo. N. Dixon & Co., 43, Castle Street, Liverpool, Auctioneers and Valuers, COLLIERIES, Brickworks & Mining Plant. T?or Sale, .550 yards 19/16’s Twin Cracore DOUBLE WIRE ARMOURED CABLE; low tension; very little used —Best offer to Box 7079, Colliery Guardian Office, 30 & 31, Furnival- street, Holbom, London, E.C. 4. Wanted, Three Second - hand Lanca- SHIRE BOILERS, must be in good condition and suitable for a pressure of 100 to 150 lb. per sq. in,, subject to Boiler Insurance Inspector's report. One Second-hand pair of AIR COMPRESSORS, air pressure 70 lb. per sq. in. and 1,500 to 2,000 cu. ft. of free air per minute. Two HORIZONTAL PUMPS capable of delivering 25,000 gals, per hour each, to a head of 500 ft. at 70 lb. pressure Compressed Air; also quantity of 4 in. and 6 in. dia. loose flange pipes. Full particulars with price to NORTH’S NAVIGATION COLLIERIES (1889) LTD., Aberkenfig, Glam. BORING for MINERALS, &c. Solid Specimens of the Strata obtained. Established 1888. Work guaranteed. _____ J. S. DAVIDSON & SON, St. Bees, CUMBERLAND. ________ “CROWRI" BOILER COVERINGS of Outstanding Superiority. 96 X SAYING Intensest Heat cannot Impair. SUTCLIFFE BROS. Electrical Machinery - See Illustrated Advt. PEEBLES BRUCE PEEBLES & Co. Ltd. Engineers, EDINBURGH. in next weeks issue. ___________________________ ARMYTAGE & JONES Ltd., SHEAF STREET, SHEFFIELD. RAILS. WAGONS. (For all purposes). (Coal & Ballast). Boiler Tanks. Points and Crossings. CRANES. (Loco & Derrick). Sleepers. Buffer Stops. FOR SALE. _______________________________________________ Established 1866. PATENTS, DESIGNS, and TRADE MARKS. TTARRIS AND MILLS, Chartered Patent Agents, 34 and 35, HIGH HOLBORN, LONDON, W.C. 1. Telegraphic Address—" Privilege, London.” Tel. No— Holbom 2763. PATENTS. Advice Free. h™0&. > New Inventions, Designs, Trade Marks, carefully and promptly protected at low INCLUSIVE FEES. THE CONSULTING PATENT AGENCY (1880), 253, Gray’s Inn Road, London, W.C. 1. SAFETY FIRST ( Patents ) APPLIANCES “ The most wonderful thing is not the mechanical Com- petency, Safety, and Profit values of Mr. Hanley’s APPLIANCES, but his enormous Confidence in mine officials.” “ Mr. Hanley gives the facts free, sends goods on approval, relies on our judgment after proper experiment, and leaves us no business reason (except the small first cost) for hesitation.” “ Obviously, if we don’t adopt Mr. Hanley’s appliances, we must tolerate the injuries and losses preventable ONLY by these appliances.”—3 Mining Engineers. — Lists Free: — A. HANLEY, Thirlmere, Sheffield. Buyers of all kinds Steel and Iron Scrap. WRAMsBIMiNL" Constructional Engineers, 50, Effingham Road, Sheffield, MANUFACTURERS OF English Steel Joists, Rivetted Girders, Flitch Plates, Angles, Tees, Channels, Constructional Steelwork, &c., SOLICIT YOUR ENQUIRIES. _____________ We hold a LARGE STOCK of all Sections for prompt delivery. Telegrams— Telephone— “ Girders, Sheffield.” 3873 Central. LOCOMOTIVES. 18 in. 2-6-2 Side Tank Loco., thoroughly overhauled, wheels 48 in diameter; price £3,250. 13 in. six-coupled Kitson Loco., overhauled, 150 lb.; £1,800. 12 in. six-coupled Saddle Tank Locomotive, overhauled, 150 lb. STEAM NAVVIES. Two 12-ton Wilson Crane Type Steam Navvies, under rebuild, very fine machines ; £2,000 each. ELECTRIC GENERATORS AND MOTORS. 300-kw. Westinghouse Alternator, 2,400 volts. Belt- or Rope-driven Generator or Motor, 230 volts d.c., 100-h.p.; £350. Belt- or Rope-driven Generator or Motor, 500 volts d.c., 250-kw.; £700. STEAM ENGINES. High Speed Compound Vertical Engine, by Robey, 124-b.h.p.; £360. Marine Type Compound Engine, cylinders 15 in. and 30^ in. by 33 in. stroke # BOILERS. Babcock & Wilcox Water-tube Boiler, 140 lb. w.p.; £650. Two Marine Boilers, 14 ft. 10 in. by 6 ft. 7 in., 120 lb. w.p.; £600 each. Marine Type Boiler, 10 ft. 3 in. by 9 ft. 3 in., 120 lb. w.p.; £980. 12-h.p. Davey Paxman Loco. Type Boiler, 120 lb., new tubes ; £250. CRANES. 15-ton Steam Travelling Derrick, 70 ft. steel jib; £650. 5-ton Steam Derrick, 75 ft. jib ; £360. Six Hand Derricks, 30 cwt. to 3 tons. 15-ton Steam-driven Overhead Crane, 45 ft. span ; £650. 20-ton Square Shaft Rope-driven O.H. Crane, 34 ft. 5 in. span; £525. Three 3-ton all Steel Goliath Cranes, 19 ft. 6 in. span; £250 each. 5-ton Hand Bogie Crane, by Booth Bros.; £250. 3-ton Hand Bogie Crane, by Piggotts ; £85. GAS ENGINES. Magnificent 500-h.p. Hor. Gas Engine, with alternator; £2,500. 110-h.p. Crossley ZE Gas Engine and Producer Plant: £750. 80-h.p. Stockport Gas Engine ; £220. 45-h.p. Crossley Gas Engine and Gas Plant; £250. Two 35/40-h.p. Premier Gas Engines; £100 each. STEAM WAGONS, TRACTOR, ETC. 8-h.p. Foden Traction Engine, 150 lb. w.p.; £650. 5-ton Yorkshire Steam Wagon, 200 lb. w.p.; £650. 5-ton Wallis & Steevens Tractor, 150 lb. w.p.; £425. Two 5-ton Traction Wagons; £65 each. MACHINE TOOLS. 48 in. Centre S.S.Sc. and Coning Lathe, 12 ft. chuckplate, 60 ft. bed. Hor. Boring Machine, 5 in. spindle, weight about 25 tons ; £650. Hor. Boring Machine with two heads, 4i in. diameter spindles; £375. D.H. Milling Machine, by Smith & Coventry. Two Circular Milling Machines, by Ludwig Loewe. Radial Drill, by Smith Beacock & Tannett, 60 in. arm. Large Pillar Drilling Machine, 4 in. spindle. 4 Wall Radial Drills, by Noble & Lund, 2£ in. spindles; £50 each. HYDRAULIC PRESSES AND PLANT. Sixteen Vertical Hydraulic Presses, with rams 12 in., 10 in. and 8 in. diameters, for two tons per square inch pressure. Hyd. Pumps, Fielding & Platt, 10 in. by 15 in., 12 in. by 24 in., and 16 in. by 24 in., 1,500 lb. w.p. Electrically-driven Horizontal Pumps ; £375. Hyd. Punching and Shearing Machines, by Fielding & Platt. Quantity Hyd. Pipes and Fittings. Hyd. Accumulator, 30 in. ram, 23 ft. 10£ in. stroke. JOHN F. WAKE, Engineer, DARLINGTON. Trade and Mineral Development after the War. MINERAL ENTERPRISE IN CHINA. By W. F. COLLINS, Associate of the R. S. of Mines, F.R.G.S. Demy 8vo. With Maps. 21s. net. “ The foreign and internal trade of China depend more than anything else on the development of mineral enterprise. Its conditions and prospects are therefore well worth study by a writer who is an expert mineralogist and has been vice-chairman of the Peking British Chamber of Commerce.”—Times. Wanted, Under-manager, for Colliery in Wigan District, one accustomed to Ince mines and pumping plant preferred—Apply, giving references and stating age and salary required, to Box 7074, Colliery Guardian Office, 30 & 31, Furnival-street, Holbom, London, E.C. 4. Wanted, by large firm of Constructional Engineers, DRAUGHTSMAN, fully experienced in the design of modern coal washing plant, to take entire charge of department—Box 7035, Colliery Guardian Office, 30 & 31, Furnival-street, Holbom, London, E.C. 4. For COLLIERIES Bnnznnn™ A SPECIALITE. ——■ ARNOLD’S Bulbous Boiler Flue. HopRinson-West Patent Boiler Flue. WM. ARNOLD & CO., Barnsley. Explosives Manufacturing Company is open to appoint LOCAL AGENTS for the sale of their Blasting Explosives and Accessories to Collieries, Mines, Quarries, etc. Applications only considered from those having first-class business connections and know- ledge of the Explosive trade.—Address, Box B666, c/o DAWSON’S, 121, Cannon-street, London, E.C. 4. WM. HEINEMANN, 21, Bedford Street W.C. 2. J. W. BAIRD AND COMPANY, PITWOOD IMPORTERS, WEST HARTLEPOOL. YEARLY CONTRACTS ENTERED INTO WITH COLLIERIES. OSBECK & COMPANY LIMITED, PIT-TIMBER MERCHANTS, NEWCASTLE-ON-TYNE. SUPPLY ALL KINDS OF COLLIERY TIMBER. Telegrams—“ Osbecks, Newcastle-on-Tyne.” Brattice Cloth. — Gentleman Wanted with influence amongst colliery managers and proprietors, to sell BRATTICE CLOTH on good commission only.—Address, FAIRCLOUGH & SONS, Bank-lane, Clayton, near Manchester. T7irst-class Colliery Manager, M.E. and T E.E., DESIRES POST. Highest credentials previous managements. Wide practical experience; developing, cutting, thick and thin seams, extensive haulage and heavy outputs. Proved reliability and efficiency. Per week, £5; house and coal.—Box 7080, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. anted, a Working Electrician, for a Colliery in the South of England.—Apply, stating age, qualifica- tions, and wages required, to Box 7067, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. anted, thoroughly Experienced COLLIERY ENGINEWRIGHT, for large South Yorkshire Colliery.—Apply, stating age, qualifications and salary required, to Box 7070, Colliery Guardian Office, 30 & 31, Furnival-street Holbom, London, E.C. 4. Wanted, Storekeeper, for large colliery in West Yorkshire.—Apply, stating salary required, together with copies of reference, to Box 7078, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. Preference given to discharged officer or man with some knowledge of bookkeeping. anted, Colliery Enginewright, 6 o’clock man, experience with Turbines, good organiser, for Midland Colliery. Good salary to competent man.—Apply, stating full particulars of experience, age, with testimonials, to Box 7072, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. _____________________________________________________ TO OUR READERS. The Government, by Order in Council, is issuing in- structions prohibiting the return of all unsold papers and periodicals. The effect of this will be that newsagents will only stock the “ Colliery Guardian ” if actually ordered by their customers, and to prevent disappoint- ment our readers should either subscribe for the regular supply of the journal direct, or place a definite order with their newsagent. _____________________________________________________ Discharged Army Officer, 27, B.Sc., M.I.M.E., certificated colliery manager and surveyor, seeks appoint- ment as MINING ENGINEER or ASSISTANT AGENT, held important positions in the northern coal fields and ironstone mines.—Box 7076, Colliery Guardian Office, 30