800 THE COLLIERY GUARDIAN April 19, 1918. CONTENTS. Editorial Articles:— Page Percentage of Extraction of Coal Seams ..... 801 The Education Bill ......................... 801 Articles :— The Conservation of Coal.................... 793 Order Concerning Unworked Seams ............ 794 New Regenerative Coke Oven Plant at Thornaby Ironworks................................. 794 The By-Product Coke Oven in the United States 796 Coal Output in 1917 ........................ 797 Mining Employment Statistics ............... 799 Miners for the Army......................... 799 South Wales Mining Timber Trade ............ 804 The Supply of Pitwoood ..................... 804 Meteorological Office....................... 806 Labour and Wages............................ 806 Metropolitan Coal Prices.................... 806 Coal Conservation and Electrical Development ... 808 Open Contracts ............................. 810 The Freight Market ......................... 810 Obituary ................................. 810 Abstracts of Patent Specifications Recently * Accepted ................................. 810 New Patents Connected with the Coal and Iron Trades ................................... 812 Government Publications..................... 812 Publications Received ...................... 812 Reports of Meetings:— Mining Institute of Scotland ............... 795 Manchester Geological and Mining Society.... 797 North * of England Institute of Mining and Mechanical Engineers ..................... 805 The Coal and Iron Trades ....................802—804 The London Coal Trade ...................... 803 The Tin-plate Trade......................... 803 The By-Products Trade ...................... 804 Law Intelligence ......,........................ 799 Notes from the Coal Fields...................... 806 Coal, Iron and Engineering Companies............ 810 Miscellanea :— Partnerships Dissolved—German Coal in Switzer- land ..................................... 794 Coal Rationing in Manchester—New Steel Combine 799 Coal Exports in March — Limitation of Coal Contracts ................................ 803 A One-man Colliery—Shipments to Norway— Imports of Pit Props—Less Household Fuel — Exports and Imports of Mining Machinery— Lancashire and Cheshire Colliery Under- managers’ Association ..................... 804 Iron Pit Props.............................. 808 Lancashire and Cheshire Miners* Permanent Relief Society............................ 810 Distillation of Lignite .................... 812 Offices for ADVERTISEMENTS and PUBLICATION— 30 & 31, Furnival Street, Holborn, London, E.O> 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. } per insertion for each „ 13 ” 5s. 3d. ) lnch 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. TARRIS AND MILLS, Chartered Patent Agents, 34 and 35, HIGH HOLBORN, LONDON, W.C. 1. Telegraphic Address—“ Privilege, London.” Tel. No.—Holbom 2763. 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. The Oldest Diamond Drill Company. Established 1872. PQRING for MINERALS. SPEED AND CERTAINTY. CYLINDRICAL “CORES.” THE AQUEOUS WORKS and DIAMOND ROCK-BORING Co. LTD. Cuildfohd St., 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 U.M.S. LESSONS BY POST. The best Mining Education. Unapproachable Successes. 52 H.M. Inspectors are U.M.S. Men. — Syllabus free. — THE UNIVERSAL MINING SCHOOL W) 50, Connaught Road, Cardiff. Briquette Machinery Ltd., Charmouth Street, LEEDS. Machinery for Briquetting Peat, Lignite, Coke, Coal, Iron, Copper, Nickel, Cement; Also Sawdust, Waste Cereals, Offals, Sewage. PATENT COAL DRIER. YEADONS’ LATEST PATENTED BRIQUETTE J For Coal, Coke, Iron and other Ores. YEADON, SON & CO., Engineers, LEEDS, Have a World-wide Reputation, and <0 Years’ Experience. They have supplied MORE BRIQUETTE PLANTS than any other firm in this country. 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. R. GRAESSER Ltd., CSL RUABON. BLACK VARNISH ( ^PRESERVATIVE0'') CONTRACTORS TO BRITISH AND OTHER GOVERNMENTS. Telegrams: Established 1867. Telephone: “ Graesser, Ruabon.” Code ABC 5th Edition. 3 Ru xbon. “TOLEDO” (APPROVED BY WOOLWICH ARSENAL). An Absolute Rust Preventer. WAGON AND COLLIERY PAINT & INSULATING VARNISHES. Geo. N. Dixon & Co., 43, Castle Street, Liverpool, Auctioneers and Valuers, COLLIERIES, Brickworks & Mining Plant. WANTED. ft A n ■ n IRON & STEEL, of every description. SI ■ K A F COLLECTED WROT, & STEEL separated or mixed. UVIIMI TURNINGS & BORINGS, heavy, medium & light. BOILERS, for pressure, tanking or scrap. Very highest prices free on rail any district. HALL, LEWIS & CO. - CARDIFF. ’Phone—8245 (Private Branch Exchange). Telegrams—" Halcyon, Cardiff. ’ The Sheffield Mercantile Steel Co. Ltd. POLDI STEEL WORKS, Napier St., SHEFFIELD. Telephone Nos -1114 & 1115 Central. Specialities : Telegrams Shemerco, Sheffield.” Alloy and Special Steels for all purposes. Stop Taking Risks! Highest Efficiency, Longest Service obtained by using only “CHEKKO” BRAKE & CLUTCH LINERS. CRESSWELLS’ LD., Wellington Works, Bradford. 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. PERFORA TED PL A TES 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 LANCASHIRE AND CHESHIRE COLLIERY UNDER-MANAGERS’ ASSOCIATION. z 6, Colin Street, Wigan Lane, Wigan (General Secretary: JOSEPH BUTLER). MEMBERS OF THE NATIONAL FEDERATION OF COLLIERY UNDER-MANAGERS OF GREAT BRITAIN. The Council desire to make an earnest Appeal to all Under-Managers who are not yet members of any association to correspond with SECRETARY at the above Address, when Particulars of Membership will be forwarded, and Branches formed at Convenient Centres. MONMOUTHSHIRE EDUCATION COMMITTEE. MINING DEPARTMENT. A pplications are invited for the post of JjL MINING LECTURER, at a salary of £200 by £20 to £300 per annum. Further particulars may be obtained from the undersigned upon receipt of stamped foolscap envelope. D. BRYNMOR MORGANS, County Hall, Newport. Director of Mining Education. 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, Holborn, London, E.C. 4.’ rattice 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. mted, a thoroughly experienced ,. /I C^LLIER\E1SS}J^X]H?HmA~Apply’ statinS a&e, qualifica- tions and references, to MANAGER, Tilmanstone Colliery, Eythorne nr. Dover. ’ THE Corlett Electrical Engineering Co. Ld. T’phone- WTG AIV .. T’gram- 63 Wigan. ** « Corlett, Wigan.” Contracts Dept. - Ref. C.D. Manfg & Repairs Dept. - Ref. W.D. Stores Dept. - Ref. S.D. q g // Electric Lighting, '/ Electrical Power Engineers, / Electrical Power Transmission. ASSOCIATION OF PRIVATE OWNERS OF RAILWAY ROLLING STOCK. JbraecZ in 1891 for the Protection of the Rights and Interests of Private Owners. Applications for rparticulars and terms of membership may be sent to the SECRETARY, Clarence Chambers,‘Gloucester. W. W. Hill, Son & Wallace Ltd., Elton St., Broughton Bridge, MANCHESTER. ---- ESTABLISHED 1840. - THE KOPPERS’ PATENT BYE-PRODUCT COKE OVENS AND NEW SYSTEM OF RECOVERING THE BYE-PRODUCTS GIVE RESULTS WHICH HAVE NEVER BEEN EQUALLED BV ANY OTHER SYSTEM. See large advertisement appearing in alternate issues of this Journal. All communications to be addressed to— THE KOPPERS’ COKE OVEN & BY-PRODUCT CO., 301, Glossop Road, Sheffield. TeL No., 1935. Tel. Address—** Kochs, Sheffield." Wanted, Colliery Manager for Lanca- shire Colliery working 2 thin inclined seams, electric coal-cutting pumping and haulage; good position for suitable man.—Send copies of recent testimonials, and age, experience and salary required, to Box 7044 Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London E C 4 ’ Wanted, an experienced Manager for a battery of 60 Kopper Regenerative Coke Ovens and By-product Plant.—Apply, stating age, previous experience and salary required to THE HORDEN COLLIERIES LTD., Castle Eden. Co. Durham. ’ Wanted, an energetic Under-Manager, acquainted with thin and thick seams, to take control of pit in Staffordshire. Capable of keeping plans of same.—Apply, giving reference also state salary required, to Box 7047, Colliery Guardian Office 30 & 31’ Furnival-street Holborn, London, E.C. 4. ’ Wanted, RESIDENT COLLIERY AGENT for GWAUN-CAE-GURWEN COLLIERIES. Accustomed to working Anthracite. Apply, stating age, experience, and salary required, to— GWAUN-CAE-GURWEN COLLIERY COMPANY LIMITED, Gloucester-chambers, Swansea. Colliery for Sale, going concern, South- Western Coal Field; large reserves, House, Steam and Gas Coals — Box 7046, Colliery Guardian Office, 30 & 31, Furnival-street Holbom London, E.C. 4. Larch Pit Props for Sale, in Number Eight Mining Area; 7 feet long, 3£ to 7 inches tops; 4/5,000 pieces at fir selling prices ner 100 feet.—Box 7039, Colliery Guardian Office. 30 & 31. Furnival-street, Holborn, London, E.C. 4. l\/rAPS of the British Coalfields. AVA 1. Scotland. 2. North of England. 3. South Wales. 4. North Midlands. 5. South Midlands. Sheet, 4s. each; Mounted on Cloth on Rollers, or in Case, 6s. each.-THE COLLIERY GUARDIAN CO. LTD. 30 & 31, Furnival-street, Holbom, London, E.C. 4.