972 THE COLLIERY GUARDIAN November 8, 1918. CONTENTS. Editorial Articles :— Page Banks and Trade ............................. 973 Coal and its Scientific Uses................. 973 Articles :— Education in Mining : From the Student’s Point of View..................................... 965 Coal Substitutes in France.................. 966 The Power Factor ............................ 967 Utilising Low-Grade Fuel .................... 968 Diffusion of Oxygen through Stored Coal...... 968 Improving Boiler Room Efficiency............. 969 Steel Cantilever Support for Headframe ...... 970 Ignition of Explosive Machines by Electric Sparks 970 The American Coal Trade ..................... 970 South Wales Mining Timber Trade ............. 974 Miners’ Wages ............................... 977 Book Notices ................................ 978 Iron and Steel Prices...................... 978 New Way of Socketing Wire Ropes ............. 979 Labour and Wages ............................ 979 Obituary ................................... 979 Mean Magnetic Declination.................... 980 The Freight Market .......................... 982 Open Contracts .............................. 982 Abstracts of Patent Specifications Recently Acptd. 982 New Patents Connected with the Coal and Iron Trades .................................... 984 Government Publications...................... 984 Publications Received ....................... 984 Catalogues and Price Lists Received.;........ 984 Reports of Meetings:— North Staffordshire Institute of Mining and Mechanical Engineers ..................... 971 The Coal and Iron Trades .....................974-977 The Tin-plate Trade.......................... 976 The London Coal Trade ....................... 977 The By-Products Trade ....................... 977 Law Intelligence ............................... 977 Parliamentary Intelligence....................... 977 Current Science and Technology .................. 978 Notes from the Coal Fields....................... 980 Coal, Iron and Engineering Companies............. 982 Miscellanea :— Safety Lamp Glass Order—Coal and Potash for Allied Chemista............................ 969 Chemical Industry and Coal .................. 970 Demonstration of Anthracite Heating ......... 974 Standing Council on Post-War Priority ....... 976 Dutch Fuel Possibilities..................... 977 United States Coal Output in 1917 ........... 979 Middlesbrough Iron and Steel Shipments—Miners’ Demand for Higher Pay ..................... 980 Preventable Waste of Coal—“ The Fuels of War ” 984 ADVERTISEMENTS. Offices for ADVERTISEMENTS and PUBLICATION: 30 and 31, Furnival Street, Holborn, London, E.C. 4. Telegraphic Address—“Colliery Guardian, Fleet, London.” Telephone—1354 Holborn. CONTRACT ADVERTISEMENTS : Prices for SPECIAL POSITIONS on application Prices for ORDINARY POSITIONS:— Single Column (3 inches wide) : For 52 insertions 3s. 9d. A per insertion for each „ 13 „ 5s. 3d. ) inch in depth. Double Column (6 inches wide), double the above rates. Three Columns (9 inches wide), three times the above rates. Established 1866. PATENTS, DESIGNS, and TRADE MARKS. TT ARRIS AND MILLS, Chartered Patent Agents, 34 and 35, HIGH HOLBORN, LONDON, W.C. 1. Telegraphic Address—“ Privilege, London.” Tel. No.—Holborn 2763. TJATENTS. Advice Free. HofSem 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. THE ISCA FOUNDRY COMPANY LTD., RAILWAY PLANT If GENERAL ENGINEERS, Switches, Crossings,Turntables, Water Cranes, Girders, Bridges, Roofs, Pipes, Pumps, Wagons, Tanks, Engines, Boilers. Cranes. Works: NEWPORT, MON. London Office—53, Victoria Street, S.W. 1. D. Liewellin Evans, PROPRIETOR OF THE Cardiff Brattice Cloth Company, 120, BUTE ST. CARDIFF. AGENT FOR Hotel’s Explosives, VENTILATING FANS AND ENGINES. See Advertisement appearing on front Cover of alternate weeks. THE WADDLE PATENT FAN AND ENGINEERING CO. LTD., Llanmore Works, Llanelly. 7^ F4TUI7TT/YT T7Q F0R MINERALS, JDvJlXJDjXlV/XjJLJkJ WATER AND BRINE Boreholes for Prospecting in Underground Workings a Speciality. VIVIAN’S BORING COMPANY, PARKSIDE, CLEATOR MOOR. OVER 88 MILES OF BORINGS COMPLETED. Established 44 years. Largest experience. Telegrams—“ Vivians, Parkside, Cleator Moor.” BORING for MINERALS, &c. Solid Specimens of the Strata obtained. Established 1888. Work guaranteed. J. S. DAVIDSON & SON, St. Bees, CUMBERLAND. “CROWN" BOILER COVERINGS of Outstanding Superiority. 967. SAYING Intensest Heat eannot Impair. SUTCLIFFE BROS. Ta’S"- Electrical Machinery See Illustrated Advt. PEEBLES tn October 4th issue. BRUCE PEEBLES & Co. Ltd. Engineers, EDINBURGH. ARMYTAGE & JONES Ltd., SHEAF STREET, SHEFFIELD. RAILS. WAGONS. CRANES. (For all purposes). (Coal & Ballast). (Loco & Derrick). Boiler Tanks. Points and Crossings. Sleepers. Buffer Stops. Buyers of all kinds Steel and Iron Scrap. Late Assistant General Manager Ackers, Whitley & Co. Ltd., Bickershaw Collieries, Lancs., Eng. FRANCIS GLOVER, MINING ENGINEER, Princeton Coal and Land Co. Ltd., PRINCETON, B.C., CANADA, Successful Coal Mining. Reports. Advice on Canadian Mining. JOHN STANIAR & CO., Manchester, Eng. Wire Weavers & Metal Workers. Established oveb 100 Yeabs. --------- EVERY REQUISITE. ------------------ GAUZES in Silk and Wire. BRUSHES in Bristle, Weed, Fibre or Steel, for every knowe make of Brush Machine. PERFORA TED PL A TES in Iron, Steel, Zinc, Brass, Copper. GUARDS for Engines, Stores, Machines, Strapping, Lifts, Ac. AWARD MEDALS—Japan-British 1910, Franco-British 1908. Telegraph—“ Gause. Manchester.” Telephone—City 3306 Wanted, Assistant Colliery Electrician, capable of taking charge of new 500-kw. turbo-alternator plant in the absence of chief electrician, and to assist generally.—State age, must be exempt from military service, qualifications, salary required, and when at liberty, to Box 7204, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. E epresentation in Export Coal Trade.— M. Cornand, the writer of the articles on the Belgian coal trade, appearing in the Colliery Guardian of October 4 and 18, wishes to represent a good firm for above trade. Over 10 years commercial and technical expe- rience in coal trade (Belgium and France), chartering and running steamers, sampling and analysing. Good personal connection. Address— E. CORNAND, 19, Rue Louis-le-Grand, Paris. Brattice Cloth. — Gentleman Wanted with influence amongst colliery managers and proprietors, to sell BRATTICE CLOTH on good commission omy.—Address, FAIRCLOUGH & SONS, Bank-lane, Clayton, near Manchester. /gentleman, First-class Colliery Manager’s Certificate, 25 years’ management and commercial experience, shortly at liberty. Served apprenticeship with well-known mining engineer in the Midlands. Young and energetic. Would accept appointment as assistant to general manager. Salary not so much an object as opportunity for advancement.—Apply, Box 7211, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. anted Enquiries from all the Collieries in the United Kingdom as to our Agency for REPORT BOOKS and FORMS, as prescribed by the Coal Mines Act, 1911.—Full particulars on application to the COLLIERY GUARDIAN CO. LTD., 30 & 31, Furnival-street, Holborn, London, E.C. 4. A Certificated Colliery Official, expe- rienced in sinking, dealing with pumps and large quantities of water, stripping old shafts and opening out old-abandoned mines, DESIRES APPOINTMENT, home or abroad.—For references or interview, write Box 7208, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. Wanted, Assistant Colliery Engineer for North Wales Collieries. Salary to commence about £5 per week. State full particulars in application—Apply, Box 7195, Colliery Guardian Office, 30 * 31, Furnival-street, Holborn, London, E.C. 4. Colliery Engineer Required by the Government of Nigeria for two tours of twelve months, with possible extension. Salary £350-£10-£400, and a Avar bonus of £60 per annum whilst in West Africa if the person engaged has dependants. Single quarters and second-class passages. Liberal leave in England on full salary. Candidates must be young and energetic, with experience in general colliery engineering, practice, modern haulage, ventilation and screening. Capable of handling the engineering work in the development of new collieries, with experience in electrical engineering as applied to collieries. Apply at once by letter, giving full particulars as to age, qualifications, and experience, tb— Sir J. CADMAN, Mining Department, University, Birmingham. anted, a Colliery Under-Manager, with experience in pillar-and-stall work, and coal-getting by machines. Apply, stating age, experience, and salary required, to- THU MANAGER, MICKLEFIELD COAL AND LIME CO. LTD., Micklefleld, Leeds. anted, a Deputy, with second-class certificate, used to pillar-and-stall work, and coal-getting by machines. Apply, stating age and experience, to THE MANAGER MICKLEFIELD COAL AND LIME CO. LTD., Micklefield, Leeds. anted, Competent Surveyor for group of steam coal collieries. Apply, stating age, experience, and salary required, Box 7216, Colliery Guardian Office, 30 & 31, Holborn, Furnival-street, London, E.C. 4. The Position of Surveyor at a large colliery in West Yorkshire, Box No. 7165, is now filled, and all appli- cants are thanked for their applications. elgian Gentleman, owning wholesale coal business in Belgium, Seeks to Buy British Coal for importation in Belgium, or general agency or representation for this trade after the war. Address- TH. STULTJENS, 37, Oxford-street, Loughborough, Leicester- shire. anted, Situation for Coal-cutting. A FITTER, accustomed to Bar. Chain and Disc machines; also 2 men, fully experienced Coal-cutters: compressed air preferred.—Apply. Box 7218, Colliery Guardian Office, 30 * 31, Furnival-street, Holborn, London, E.C. 4. anted, bv a Firm of Mining Engineers in the Midlands, a capable MINING AND LAND SURVEYOR. —Apply, giving experience and wages required, to Box 7219, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. Wanted a good all-round Coke Oven MANAGER for large Battery of Patent Ovens: must have thorough technical knowledge, good practica experience, and able to manage men. -Apply, stating age, experience, and salary required, to Box 7223, Colliery Guardian Office, 30 * 31, Furnival-street, Holborn, London, E.C. 4. Experienced Colliery Manager in the Midlands DESIRES ENGAGEMENT or War Work. Box 7224, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. anted, first-class competent Engine- WRIGHT, used to general colliery engineering; to work under chief engineer. Apply, giving age, salary required, and full particulars of experience, to Box 7225, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. Patents.—Inventors, Advice, and Hand- BOOK Free. KING’S PATENT AGENCY LTD., 165, Queen Victoria-street, London, E.C. 4. Universal Mining School. Lessons by post. Thorough preparation for all Mining Exams. Syllabus and advice free. State your requirements. SOUTHERN and HALBAUM, 50, Connaught-road, Cardiff. Tuition by Post.—Mechanical Engineering of Collieries (Winders, Haulages, Pumps, Air- and Electrically- driven). Intended for Mechanics and Fitters. PENNINGTONS, University Tutors, 254, Oxford-road, Manchester. a transactions Mining Institute. For sale, volumes (unbound) 1888-1918, 30 years.—Send offers to Box 7214, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. Kent Coal Field.—To be Sold, an Area of 1,100 acres of Freehold MINERALS, in a ring fence with about 200 acres of land intersected by main line. A good site for Colliery. Apply, Messrs. WORSFOLD & HAYWARD, Land Agents, Market-square, Dover. TANKS FOR SALE. Steel Tank, about 62 ft. dia. by IS ft. deep, capacity about 340,000 gallons, sound plates. BOILER TANKS: Flat-ended. Dish-ended. One 9 ft. bv 24 ft. I One 6 ft. 6 in. by 30 ft. One 8 ft. by 28 ft. Three 5 ft. 9 in. by 25 ft. Two 7 ft. by 28 ft. I One 3 ft. 9 in. by 18 ft. Many other sizes. Also Air Receivers, Engines, Pumps, Tubes, Chimnevs, etc. WHEELS AND AXLES. SET RAILWAY WAGON WHEELS and AXLES, 4 ft. 8£ in. gauge. 50 Sets COLLIERY BOGIE WHEELS and AXLES, 18 in. gauge. Ready for delivery. CAST IRON COLUMNS -20,11J in. dia. by 10 ft. 6 in. high; six, 10| in. dia. by 15 ft. high; six, 9J in. dia. by 16 ft. high. AH' perfectly sound. PUMPS. VERTICAL 3-THROW PUMP, 7 in. cylinders, 12 in. stroke, 2 in. suction and delivery. VERTICAL STEAM SINKING PUMP, 12 in. by 8 in., and 7 in. by 12 in., 5 in. suction and delivery, sliding pipes for lengthening. Two Cameron Type PUMPS, double-acting. Combined GAS ENGINE and PUMP, 11 in. delivery, and other Pumps in stock. Priced list on application. One 30-h.p. Stockport GAS ENGINE, with driving pulley, 3 cooling tanks, gas bae\ silencer, etc. Perfect condition. STEEL WINDING DRUM, 2 ft. 9 in. dia. by 4 ft. 3 in. long, cheeks 14 in. wide from barrel, internal spur gearing, handle at both ends and brake. Perfect, never used. STEEL WINDING DRUM, 2 ft. 4 in. dia. by 3 ft. 10 in. vide, cheeks 13£ in. wide from barrel, as above. LANCASHIRE BOILER, 27ft. by 7ft., by Yates* Thom, good condition, passed for 70 lb. pressure, with all fittings. RAILS. A few Double-head and Flat-bottom RAILS in stock. Particulars on application. FIRTH BLAKELEY, SONS A CO. LTD., Church Fenton, via Leeds. □it Rails.—Portable Railway Turnouts, TIP WAGONS, TURNTABLES. Good stocks. Send your enquiries. THOS. W. WARD LTD., Albion Works, Sheffield. Aor Sale, 150 tons Second-hand T-section _ RAILS, 33 lb. per yard, with chairs to match. Excellent condition. GOODWIN & CO., 53, Queen-street, Sheffield. 8-tons Steam Loco. Crane, by Dunlop, Bell & Co., 17 ft. jib, 10 ft. rail gauge, boiler passed for 65 lb. pressure. Price £350.—WILLIAM FIRTH LTD., Greek-street, Leeds. A /A/A-kw. Generator, 500 volts d.c., / \ 7 rope-drive; 150-kw. Ditto, 500 volts d.c.; also 190-h.p. MOTOR, 500 volts d.c. All multipolar-type machines; in first-class condi- tion. HARRY H. GARDAM A CO. LIMITED, Staines. T?or Sale, very High-class Pair of Com- Jj POUND HAULAGE ENGINES, by Worsley Mesnes & Co., in practically equal to new condition; cylinders 22 in. and 30 in. by 42 in. stroke, drum 7 ft. diameter, helical gearing. Seen fixed in S. Wales. JOSEPH PUGSLEY A SONS LTD., Lawrence-hill, Bristol. TAor Sale, one S.H. Vertical Boiler, 12 ft. 1 ' by 6 ft., 4 cross tubes. One Cochran BOILER, 12J ft. by 6 ft. One Cochran BOILER, 12£ ft. by 5£ ft.; all for 100 lb. steam pressure, all mountings to each. One good 14 in. cyl. OIL ENGINE. Box 7217, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. On Sale, 5-ton Pooley nearly New Road WAGON WEIGHBRIDGE, 12 ft. by 6£ ft.; in first-class condition. Price and further particulars on application to ASTLEY & TYLDESLEY COLLIERIES, Tyldesley, near Manchester. For Sale, 4 Diamond Coal-cutting MACHINES, air-driven, to undercut 4 ft. 6 in.; thorough order.— Apply, “ BELMONT,” Wilford-lane, Nottingham. Wanted, Air-compressor, steam-driven. Capacity, 1,000/1,500 cubic feet per minute.—Box 7215, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4.