920 THE COLLIERY GUARDIAN. November 1, 1918. CONTENTS. Editorial Articles :— Page Petroleum Resources........................ 921 Coal Prices and the Limitation Act ........ 921 Articles :— Removal of a Vertical Shaft Pillar ........ 913 Maximum Prices of French Coals ............ 914 Fuel Oil and its Applications ............. 914 Shock in Hydraulic Systems ................ 919 Air-Compressor Troubles.................... 915 State Trading.............................. 915 Revised Directions as to the Sale of Coal.. 916 Miners" Wage Agreement Proposals .......... 919 The American Coal Trade ................... 919 South Wales Mining Timber Trade ........... 925 Coal Mining in New South Wales............. 925 Labour and the Election ................... 926 Book Notices .............................. 926 Labour and Wages .......................... 92? Mean Magnetic Declination.................. 928 Open Contracts ............................ 930 The Freight Market ....................... 930 Abstracts of Patent Specifications Recently Acptd. 930 New Patents Connected with the Coal and Iron Trades .................................. 932 Publications Received ..................... 932 Letters to the Editors :— Humidity Formulae ......................... 926 The Coal and Iron Trades .................. 922 -926 The London Coal Trade ..................... 922 The Tin-plate Trade........................ 924 The By-Products Trade ..................... 926 Parliamentary Intelligence..................... 925 Law Intelligence .............................. 926 Notes from the Coal Fields..................... 927 Coal, Iron and Engineering Companies........... 93C Miscellanea:— Italian Coal Supply—South African Coal Output 914 Less Light for Hotels and Big Shops—Coke Oven Industry ................................ 915 Partnership Dissolved...................... 922 Output of Irish Miners—Wages in Ironstone Mining ................................. 924 Inland Revenue Report — Prices of Sulphuric Acid —Workmen’s Compensation .................. 928 The French Coal Fields—The Institution of Civil Engineers—New Fuel Inspectors ........... 930 Concessions to Deputies in Lancashire and Cheshire ............................... 932 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. "1 per insertion for each ” 13 ” 5s. 3d. ) lnch ln dePth- Double Column (6 inches wide), double the above rates. Three Columns (9 inches wide), three times the above rates. SUBSCRIPTIONS. The Colliery Guardian, published at 2 30 p.m. on Friday, can be supplied direct from the Publishing Offices, post free for twelve months, at the following rates :— United Kingdom ......... 28/6 (26/- in advance). Canada ................. 30/6 (27/6 do. ). Foreign and Colonial ... 33/- (30/- do. ). When foreign subscriptions are sent by Money Orders, payable through the Post Office, advice should be sent to the Publishers. Offices for Advertisements and Publication :—30 and 31, Furnival-street, Holborn, London, E.C. 4. Telegrams—“ Colliery Guardian, Fleet, London.” Telephone—1354 Holborn. Established 1866. PATENTS, DESIGNS, and TRADE MARKS. TTARRIS AND MILLS, -L-“~ Chartered Patent Agents, 34 and 35, HIGH HOLBORN, LONDON, W.C. 1. Telegraphic Address—“ Privilege, London.” Tel. No.—Holborn 2763. The Oldest Diamond Drill Company. Established 1872. R ORING foe ^piN'ERALS. SPEED AND CERTAINTY. CYLINDRICAL “CORES.” THE AQUEOUS WORKS and DIAMOND ROCK-BORING Co. LTD Guildfow 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. Unapproachably Successes. 5 2 H.M. Inspectors are U.M.S. Men. — Syllabus free. — THE UNIVERSAL MINING SCHOOL (» 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 MACHINERY, For Coal, Coke, Iron and other Ores. YEADON, SON & CO., Engineers, LEEDS, Have a World-wide Reputation, and 40 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. W. G. JENKINSON (ESTD. 1882), Chemical Plumber & Lead-Burner, Maker of every description of Lead>=work for Sulphate of Ammonia and By-Product Plant, Saturators, Coils and Ejectors. 43, EYRE STREET, SHEFFIELD. Tel2e#r~ — TREFOR BORING AND SINKING CO., Contractors for Deep Borings and Pit Sinkings a// over the World. Bank Chambers, 329, High Holborn, LONDON, W.C. A tf” eA" Also “BITSOL” QUICK TAR BLACKS W. W. Hill, Son & Wallace Ltd., Elton St., Broughton Bridge, MANCHESTER. ---- ESTABLISHED 1840. - AERIAL ROPEWAYS ANY SYSTEM. The British Ropeway Engineering Co. Ltd., 7, MINCING LANE, LONDON, E.C. 3. Tele—CENTRAL 1I25O. D. Llewellin Evans PROPRIETOR OF THE Cardiff Brattice Cloth Company, 120, BUTE ST., CARDIFF. AGENT FOB Nobel's Explosives Brattice Cloth. — Gentleman Wanted with influence amongst colliery managers and proprietors, to sell BRATTICE CLOTH on good commission only.—Address, FAIKCLOUGH & SONS, Bank-lane, Clayton, near Manchester. 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. Wanted, at early date, Experienced SURVEYING ASSISTANT, exempted, accustomed to surface and underground surveying, and mining engineers’ office routine work. Apply, stating age, experience, salary required, and when at liberty— MAMMATT, WHITE & KAY, Mining and Civil Engineers, 1, Albion-place, Leeds. Vacancies for two Well-educated Youths as PUPIL APPRENTICES for training as Mining Engineers. Opportunities given for attending university classes, and for experience in mining and by-product operations. Good opening for suitable youths. MAMMATT, WHITE & KAY, Mining and Civil Engineers, 1, Albion-place, Leeds. Traveller, with First-class Connection amongst Collieries, REQUIRED for the sale of High-class Drilling Machinery. State age, experience, and salary expected.—Box 7205, Colliery Guardian Office, 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. First-class experienced Colliery Manager SEEKS APPOINTMENT; experienced on the Midland fields, heavy and medium outputs, thick and thin seams, extensive coal-cutting, haulage, and development experience. Highest references previous manage- ments.—"CARBON,” Box 7210, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. WE ARE SUPPLYING ALL REPORT BOOKS & FORMS Under the Coal Mines Act, 1911. THE COLLIERY GUARDIAN CO. LTD., 30 & 31, Furnival-st., Holborn, London, E.C. 4. THE ISCA FOUNDRY COMPANY LTD., RAILWAY PLANT $ GENERAL ENGINEERS, Switches,Crossings,Turntables,Water Cranes,Girders, Bridges, Roofs, Pipes, Pumps, Wagons, Tanks, Engines, Boilers Cranes. Wores : NEWPORT, MON. London Office-53, Victoria Street, S.W. 1. 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 and terms of membership may be sent to the SECRETARY, Clarence Chambers, Gloucester. THE KOPPERS' PATENT BYE-PRODUCT COKE OVENS AND NEW SYSTEM OF RECOVERING THE BYE-PRODUCTS GIVE RESULTS WHICH HAVE NEVER BEEN EQUALLED BY ANY OTHER SYSTEM. See large advertisement appearing in alternate issues of this Journal. Ail communications to be addressed to— THE KOPPERS’ COKE OVEN & BY-PRODUCT CO., 301, Glossop Road, Sheffield. Tel. NOo 1935. Tel. Address—“ Kochs, Shefl&eM/* A well-known Colliery Manager, with over 20 years’ continued experience, contemplates shortly giving up colliery management, and would be pleased to represent any firm of standard in mine machinery, and other colliery requisites.—Box 7209, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. Wanted, Night Underground - Manager for Derbyshire Colliery. Must be thoroughly experienced in all coal-cutting work.—Apply, Box 7212, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. Wanted, Under-Manager for Colliery in Lancashire; accustomed to thin and highly-inclined seams, and main-and-tail haulage.—State age, experience, and salary required, to Box 7213, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn London, E.C. 4. entleman, 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. 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.