1128 THE COLLIERY GUARDIAN. June 15, 1917. CONTENTS. Editorial Articles page Coal and the Public Utilities..................... 1129 The Present Position of Coal 'Research.....__... 1129 Articles:— Recovery of Benzol and its Homologues from Coal Gas____________?....................................... 1121 ... Acetylene Mine Lamps......................... 1123 Briquettes from Ashes or Dusts ................ 1125 Methods of Mining in the Pennsylvania Anthracite Field....................................... 1125 South Wales Mining Timber Trade ............ 1133 The American Coal Trade _________.................. 1134 Mining Industry and Military Service .......... 1134 The Higher Training of Colliery Managers....... 1134 Labour and Wages..........................__ 1137 Open Contracts .............................. 1138 The Freight Market........................... 1140 Abstracts of Patent Specifications Recently Accepted.................................... 1140 New Patents Connected with the Coal and Iron Trades______.................................... 1142 Obituary...................................... 1142 Publications Received ____________................... 1142 Catalogues and Price Lists Received............ 1142 Letters to the Editors :— Experiments on Electric Bell Construction....... 1137 Reports of Meetings :— Mining Institute of Scotland................... 1122 Manchester Geological and Mining Society....... 1125 Institution of Mining Engineers ................ 1130 The Coal And Iron Trades................1130—1133 The London Coal Trade ..................... 1133 The Tin-plate Trade ... .................................. U33 The By-Products Trade ..................... 1133 Indian and Colonial Notes .................... 1127 Parliamentary Intelligence .................. 1134 Notes from the Coal Fields .................. 1136 Coal, Iron and Engineering Companies ....... 1138 ........ Law Intelligence ............................ 1140 Miscellanea :— War Workers* Committee and Coal Supplies—Coal , Shortage in Switzerland .................... 1124. Coal Controller and Rationing ..........__ 1125 German Steel Union—Durham Colliery Deputies and Mines Act ..........................v. 1127 A Sworn Boycott of German Goods—Imports of Pit Props—Denmark’s Fuel Shortage ............ 1133 South Wales Summer Mining and Engineering Schooi .................................__ 1134 National Federation of Colliery Under-Managers— Prices of Sulphate of Ammonia—North of England Mining Institute........................__ 1135 Exports and Imports of Mining Machinery...... 1136 Saving Coal in France—Hackney’s Coal Supply— Dutch East Indies Steam Coal___............. 1138 Imports and Exports of Coal Products—Near East Coal Market—Regulating Coal Supplies ............ 1140 Lancashire and Cheshire Coal Owners* Association 1142 __________________________________________________ Offices for AOVEmraSE^EfiiTS and PUBLICATION— 30 & 31, Furnival Stroot, Hoiborn, 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 2s. 9d. "1 per insertion for each „ 13 ” 3s. lOd. ) lnoh 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 _____ 26/- (23/6 in advance). Canada _____________ 28/- (25/- do. ). Foreign and Colonial ... 30/6 (27/6 do. ). When foreign subscriptions are sent by Money Orders, payable through the Post Office, advice should be sent to the Publishers. _________________________________________________ Established 1866. PATENTS, DESIGNS, and TRADE MARKS. ET ARRIS AND MILLS, LJ~ Chartered Patent Agents, 34 and 35, HIGH HOLBORN, LONDON, W.O. Telegraphic Address—” Privilege, London.” Tel. No.—Holborn 2763. Stop Taking Risks! Highest Efficiency, Longest Service obtained by using only “CHEKKO” BRAKE & CLUTCH LINERS. ______ CRESSWELLS’ LD., Wellington Works, Bradford. WAGONS. New and Converted 8 and 10 Ton Railway Wagons for Sale. Apply, Box 6722, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. 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 t® the SECRETARY, Clarence Chambers, Gloucester. The Oldest Diamond Drill Company. Established 1872. PORING for __________ J.JTNERALS. SPEED AND CERTAINTY, s CYLINDRICAL “CORES.” THE WOHO AfiW ROCK-BORING Go. LTD. Guildford Stm York Road, Lambeth, Lohdon, 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. Ah 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. (Dept. C.) CAMBRIAN BEHIND SCHOOL, PORTH, Clam. 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. _________________________________________ 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 (%b) 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. 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. _____________________________________________ RAILS, RAILS. ALL 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 1 Rails Roof Bars Pit Props Arches For COLLIERIES *: V and WORKS. THQS W. WARS Ltd., Albion Works, SHEFFIELD. TRY US. -------- . _____________________________ PIPING INSTALLATIONS. WATER, STEAM, OIL, AIR, GAS, HYDRAULIC, ar. Co., Partick Cross, GLASGOW. J. WALKER HOUSTON, Sole Partner. BITUMINOL BLACK ELASTIC. ACID-RESISTING. QUICK. 1 cwt. covers 7,000 sq. ft. 30/- cwt. carriage paid. Also “BITSOL” QUICK TAR BLACKS 20/- and 15/- cwt. “TOLEDO” An Absolute Host Preventer (APPROVED BY WOOLWICH ARSENAL). WAGON ANO COLLIERY PAINT & INSULATING VARNISHES. ________________________________ W. W. Hill, Son & Wallace Ltd., Elton St., Broughton Bridge, MANCHESTER. --- ESTABLISHED 1840. - Geo. N. Dixon & Co., 43, Castle Street, Liverpool, Auctioneers and Valuers, COLLIERIES, Brickworks & Mining Plant TTnder - Manager. — Messrs. Fletcher, vJ Barrows & Co. Ltd.. Atherton Collieries, state that the Under- Manager’s vacancy is now filled. Applicants please note this. Q urvey orW anted for Derby shire Collieries. State experience, wages required, age, and give testimonials. — Box 6764, Colliery Guardian Office, 30 & 31, Furnival street, Holborn, London, E.C. 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. First-class Certified Colliery Manager at liberty; wide experience with coal cutting machines, haulage, etc. Authority on spontaneous combustion. Good disciplinarian.—Box 6751, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. VVTanted.—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. GLAMORGAN COUNTY COUNCIL. SUMMER MINING AND ENGINEERING SCHOOL FOR SOUTH WALES COALFIELD. HOhe Summer School will be held during JL the month of August, 1917, at the Technical College, Swansea, and Courses will be provided in 1. Mining Engineering 2. Mechanical Engineering 3. Electrical Engineering Full particulars, prospectus, and forms of application, may be obtained on receipt of a stamped addressed foolscap envelope, from the CHIEF EDUCATION OFFICIAL, County Hall, Cardiff. To include Laboratory work. WT anted.—450 yards of 4 in. Steel Steam y V PIPING. Quote lowest price and where to be seen.—Box 6765, Ccllh t> Guardian Office. 30 & 31, Furnival-street, Holborn, London, E.C. 4. Wanted, One Two-Stage Belt or Rope- driven AIR COMPRESSOR, speed 155 revolutions, capacity 1,500 cubic ft. free air, final air pressure 70 lb.—Box 6766, Colliery Guardian Office, 30 & 31, Furnival street, Holborn, London, E.C. 4 D, Llewellin Bvans, PROPRIETOR OF THE Cardiff Brattice Cloth Company, 120, BUTE ST., CARDIFF. ______ <5^ AGENT FOB Nobel's Explosives. _____________________________ Telephone 1005. COAL. Prices on application delivered any Station, ANTHRACITE COAL for Malting, Hop Drying, Household, Lime Burning, Horticultural purposes, and Gas Producing Plants. Apply, J. S. TAYLOR, 44, Corporation St., Preston, Lancs. JOHN STANIAR & CO., Manchester, Eng. Wire Weavers & Metal Workers. Established over 100 Years. _________ _________ -----—--- EVERY REQUISITE. —---------------— GAUZES in Silk and Wire. RRUSHES in Bristle, Weed, Fibre or Steel, for every known make of Brush Machine. PERFORATE® PLATES in Iron, Steel, Zinc, Brass, Copper. GUAROS for Engines, Stores, Machines, Strapping, Lifts, &c. AWARD MEDALS—Japan-British 1910, Franco-British 1908. Telegraph—“ Gauze, Manchester.” Telephone—City 3306 BRITISH PREMIER CELTIC PIT PROPS Efficient Substitute for lining Timber. Gives Adequate Warning of Extra Roof Pressure. Indestructible: Do not deteriorate or corrode in water or damp. Cheaper and Stronger than Timber. EASILY HANDLED. SIMPLE IN CONSTRUCTION. Practical Efficiency Demonstrated. ____________________________ Please address inquiries— The British Premier Celtic Pit Props, Cathedral Works, Riverside, CARDIFF.