1036 THE COLLIERY GUARDIAN. June 1, 1917. CONTENTS. Editorial Articles ■ page Colliery Assessments ........................ 1037 Foreign Trade...............,,................. 1038 Articles * American Coal Tipples.—Ill.............. ,. 1029 The Canal Problem............................. 1031 Mine Managers* Examinations................. 1032 Coke Oven Managers* Visit to Holbrook Pl^ht. 1033 Aerial Ropeways for Forest Work .............. 1033 Refractory Materials.......................... 1034 Approved Safety Lamp Glasses ................. 1034 Miners* Permanent Relief Societies ........... 1034 The American Coal Trade ...................... 1035 The German and Austrian Coal and Iron Trades ... 1035 Experiments on the Construction of Electric Bells 1035. t South Wales Mining Timber Trade .............. 1041 Obituary........>............................. 1041 Mining Industry and Military Service .......... 1042 Subsidence Resulting from Mining............... 1043 Labour and Wages..............:................ 1044 Open Contracts ............................ 1046 The Freight Market.......................... 1048 Government Publications .................... 1048 Publications Received........................ 1048 Abstracts of Patent Specifications Recently Accepted...................’............... 1048 New Patents Connected with the Coal and Iron Trades...................................... 1050 Letters to the Editors House of Commons and Safety Harness ...... 1034 Reports of Meetings .-— South Wales Institute of Engineers ......... 1030 The Coal and Iron Trades......................1038—1011 The Tin-plate Trade ......................... 1038 The London Coal Trade ....................... 1041 The By-Products Trade ........................ 1042 Law Intelligence .....z.....................;..... 1035 Indian and Colonial Notes ........................ 1042 Parliamentary Intelligence ....................... 1042 Notes from the Coal Fields ..................... 1045 Coal., Iron and Engineering Companies .......... 1046 Miscellanea:— Coal Shipped from Ports in the United Kingdom during April .......................... 1030 German Coal Ships at Rotterdam ............... 1031 Traders and Commercial Libraries............... 1035 Controller of Timber Supply......— ••••:....... 1038 Licences for Manufacturing Sulphuric Acid .... 1041 Wigan Mine Rescue Work ........................ 1042 Coke Freights from Tyne to France—Coal Con- troller and Summer Deliveries..............A 1045 French Coal Stocks to be Notified—French Peat Commission ............................ ••••. 1046 Atmospheric Pollution...................... 104§ Offices for > AOVERTBSEWiENTS and PUBLICATION— 30 A 31, Furnival Street, Holborn, London, E.C. 4. CONTRACT ADVERTISEMENTS : , Prices for SPECIAL POSITIONS on application, Prices for ORDINARY POSITIONS :— Single Column (3 inches wide) : per insertion for each inch in depth. Double Column (6 inches wide), double the above rates. Three Columns (9 inches wide), three times the above . rates. For 52 insertions 2s. uu. ,,26 „ 3s. 4d., „ 13 „ 3s. lOd. Established 1866. PATENTS, DESIGNS, and TRADE MARKS. ' TTARRIS AND MILLS, Chartered Patent Agents, 34 and 35, HIGH HOLBORN, LONDON, W.C. Telegraphic Address—” Privilege, London.” Tel. N©.—Holborn 2763. WAGONS. New arid Converted 8 and 10 Ton Railway Wagons for Sale. Apply j Box 6722, Colliery Guardictn Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. PITWOOD, COGWOOD, SLEEPERS, Round. English Timber, or cut to any size, all kinds. Also Pitch Pine and Oregon Logs, and Half Logs, second-hand (nearly as good as new), 4 ft. to 30 ft. long. Short from 3s. per cube, long from 3s. 6d. per cube. Also other new and second-hand Timber, Boards, &c., at Bristol, Swansea, Porthcawl, Hull, and Leicester. Prices, carriage paid, on application for any kind timber or manufactured woodwork. JNTJSTIKG-S CO, Ucl., Timber Merchants, General Woodworkers, 825, Pennywell-rd., Bristol, & other branches U.K. JOHN STANIAR & CO., Manchester, Eng. Wire Weavers & Metal Workers. Established over 100 Years. -------- EVERY REQUISITE. —--------— GAUZES in Silk and Wire. BRUSHES in Bristle, Weed, Fibre or Steel, for every known make of Brush Machine. PERFORATED PLATES in Iron, Steel, Zinc, Brass, Copper. GUARDS for Engines, Stores, Machines, Strapping, Lifts, &c. AWARD MEDALS—Japan-British 1910, Franco-British 1908. Telegraph—” Gauze, Manchester.” Telephone—City 8306 WIRES AND CABLES. THE WHOLESALE ELECTRICAL CO. LTD., 54/56, Oxford Street, London, W. 1. ’Phone: Museum 1897. ____________________I___—_______:-------- ASSOCIATION OF PRIVATE OWNERS OF RAILWAY ROLLING STOCK, Formed in 1891 for the Protection of the Rights and Interests of Private Owners. Applications for particulars' arid terms of membership may be sent to the SECRETARY. Clarence Chambers, Gloucester. The Oldest Diamond Drill Company. Established 1872. PORING fob J^INERALS. SPEED AND CERTAINTY. CYLINDRICAL “CORES.” THE AQUEOUS WORKS AND DIAMOND ROCK-BORING Co. LTD. Guildford Stm York Road, Lambeth, London, S.E. Besides numerous other Important Contracts, completed (in 1897) the Deepest Boring in the United Kingdom to 3,500 ft. Great Experience in Boring for WATER. The Cambrian School of Mines, CEMETERY ROAD, PORTH, GLAM. Principal: WILLIAM THOMAS, M.Inst M.E., F.G.S., M.R., Society of Arts. Tutors—Staff of Highly Qualified Instructors in all subjects. An University Training at Your Own Home. Instruction and Lessons by Post for Mine Managers, Surveyors, Electricians, and Mine Inspectors. ■ Since the coming into force of the New Mines Act 618 Students of this School have been qualified as First and Second-class Mine Managers. 99 students have passed the Home Office Surveyors’ Exam.; 30 students are now Mines Inspectors. 40 passed First-class Electrical Engineers. Candidates for the above write without; delay for free Syllabus, and book of Previous Examination Questions. - x (Dept. G.) CAMBRIAN MINING SCHOOL, PORTH, CLAM. Briquette Machinery Ltd., Charmouth Street, LEEDS. Machinery for Briquetting Peat, Lignite, Coke, Coal, Iron,c Copper, Nickel, Cement; Also Sawdust, Waste Cereals, Offals, Sewage. PATENT COAL DRIER. The U.M.S. LESSONS BY POST. The best Mining Education. Unapproachable Successes. 5 2 H.M. Inspectors are U.M.S. Men. ■— Syllabus free. — THE UNIVERSAL MINING SCHOOL ffi) 50, Connaught Road, Cardiff. C.M.A. CORRESPONDENCE SCHOOL (Founded by T. A O’DONAHUE, F.G.S., F.S.I.). Complete Courses of Postal Tuition suitable for Home Office Mining Exams Free Syllabus from Secretary, C.M.A. SCHOOL, Leigh, Lancs. ALL COLLIERY Report Books & Forms As Prescribed by the Coal Mines Act, Can be Supplied from Stock at Official Published Prices. !l • List sent Post Free on application to - !; THE COLLIERY GUARDIAN CO. LTD., ■J 30 & 31, Furnival Street, Holborn, London, E.C. 4. PEEBLES Bruce Peebles & Co. Ltd. ELECTRIC AL MACH IN E R Y Engineers, Edinburgh. See our Illustrated Advt. May 18th. YEADONS’ LATEST PATENTED BRIQUETTE MACHINERY, For Coal, Coke, Iron and other Ores. YEADON, SON & CO., Engineers, LEEDS, Havre a World-wide Reputation, and 38 Years’ Experience. They have supplied MORE BRIQUETTE PLANTS than any other firm in this country. RAILS RAILS ALT. SECTIONS AND ACCESSORIES. Also quantity F.B. suitable for bearers.’ Sleepers. Timbers. Switches and Crossings. Buffer Stops. Locomotives. Cranes. Wagons. ARMYTAGE & JONES Ltd., Sheaf Street, Sheffield. STEEL \ Rails . Roof Rars Pit Props Arches For COLLIERIES V V and WORKS. THOS W. WARD Ltd., Albion Works, SHEFFIELD. TRY US. ------ Geo. N. Dixon & Co., 43, Castle Street, Liverpool, Auctioneers and Valuers, COLLIERIES, Brickworks & Mining Plant. Auctioneers & Valuers to the Engineering Trades. KNIGHT & Ltd. 27, Old Queen Street, Westminster, S.W. CORRESPONDENCE INVITED. SALES conducted in all parts of the Kingdom. O ail way Bolling Stock requisitioned by 1 V the Government promptly and efficiently valued by experienced builder.—FITZ EL SEVERN, Parliament-chambers, Nottingham. D. Llewellin Evans, PROPR1E TOR OF THE Cardiff Brattice Cloth Company, A2O, BUTE ST. CARDIFF. ■ AGENT FOR Nobel's Explosives. Let us quote you for ^5 For all kinds of Machines. ENGINEERS’ HAMMERS & CHISELS Small Forgings, Castings in — Lead, Copper & Brass. — The Patent Stone-dressing Tool Cold. Wicker Lane, SHEFFIELD. Br^e’^Patent Friction ClutclieS <& Hauling Installations JHL speciality SEE ADVERTISEMENT LAST ISSUE, PAGE 1015. 'Sole Makers— DAVID BRIDGE & CO. LTD. Haulage Works, CASTLETON, Manchester. Telephone 1005. COAL. Prices on application delivered any Station, ANTHRAGBTE GOAL for Malting, Hop Drying, Household, Lime Burning, Horticultural purposes, and Gas Producing Plants. Apply, J. S. TAYLOR, 44, Corporation St., Preston, Lancs. MACHINE CUT GEARING. / Double Helical Staggered or Chevron. Reducing Gears. Haulage Gears. Time Recorders & Recording Instruments. Watchmen’s Watches. THE LEWELLYN MACHINE CO./ Bristol. ■ THE ISCA FOUNDRY COMPANY LTD., RAILWAY PLANT & GENERAL ENGINEERS, Switches, Crossings, Turntables, Water Cranes, Mrs, Bridges, Roofis, Pipes, Pumps, Wagons, tab, Engines, Boilers, Crues, Works: NEWPORT, MON. London Office—53, Victoria Street, S.W. 1. Mine Accountant, 22 years’ experience abroad, wants responsible POSITION at home ; over military age, good references.—Box 6734, Collitrv Guardian Office, 30 & 31, Furnival- street, Holborn, London, E.C. 4. Brattice Cloth. — Gentleman Wanted with influence amongst colliery managers and proprietors, to sell BRATTICE CLOTH on good commission only.—Address, FAIHCLOUGH & SONS, Bank-lane, Clayton, near Manchester. Wanted, for South Yorkshire, Colliery UNDER-MANAGER for thin seam under 2 ft. thick. One with electric coal-cutter experience necessary. — Applv, stating age, wages, references, &c.» to Box 6744, Colli.rv Guardian Office, 30 & 31, Furnival- street, Holborn, London, E.C. 4. TTnder-Manager Wanted. Apply, stating age and experience, to—FLETCHER, BURROWS & CO. LTD., Atherton Collieries, near Manchester. Wanted.—Two first-class Accountants for new steel works; good salary paid for first-class men, pre- ferably disabled soldiers.—REDBOURN HILL IRON & COAL CO LTD., Scunthorpe, Lincolnshire. V'XTanted.—Colliery Manager, First-class V V certificated, for New Colliery, Midland district.—State experience, age, reference and salary, to Box 6748, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London. E.C. 4. YXTanted.—Agencies'for good Collieries V V by factor in position to place good business in GAS. HOUSE COALS, also PITWOOD.—DAVIES, Coal Factor, Crosskeys, Mon.