262 THE COLLIERY GUARDIAN. August 11, 1916. CONTENTS. Editorial Articles :— PAGE Recent Coal Field Researches ................ 263 Invention and Discovery...................... 264 Articles Coal and Shipping ............................ 253 Electrolysis in Underground Pipes............. 256 South Wales Coal Dust Experiments............. 256 The American Coal Trade ...................... 257 Gas Detector for Miners’ Electric Safety Lamps ... 258 Central Power Stations for the Coal Fields.... 259 New Automatic Stoker.......................... 260 Training for Mine Rescue Work ................ 261 Obituary ..................................... 261 Some Recent Decisions under the Workmen’s Com- pensation Act ............................ 261 Taxation and Mining......................... 268 Reducing and Enlarging Plans................ 269 Oil from Australian Coal.................... 269 The Late Sir A. B. Markham.................. 269 Automatic Car Re-rail....................... 270 Need of Government Support for the Mining Industry of Alberta ...................... 270 Preventing Accidents from Misfires ......... 270 Mining Industry and Military Service ....... 272 Labour and Wages............................ 272 Open Contracts ............................. 273 The Freight Market ......................... 273 Exports of Coal, Coke, and Manufactured Fuel from the United Kingdom .................... 274 Catalogues and Price Lists Received........ 274 Abstracts of Patent Specifications Recently Accepted.................................. 275 New Patents Connected with the Coal and Iron Trades.................................... 276 Government Publications .................... 276 Publications Received ...................... 276 Parliamentary Intelligence .................... 270 Current Science and Technology................. 260 Indian and Colonial Notes...................... 271 Notes from the Coal Fields .................... 271 Coal, Iron and Engineering Companies .......... 273 The Coal and Iron Trades.....................264—268 The Tin-plate Trade ....................... 268 The By-Products Trade ..................... 268 The London Coal Trade ..................... 268 Reports of Meetings North of England Institute of Mining and Mechanical Engineers ..................... 254 Miscellanea :— Prisoners in German Mines.................. 257 Colliery Fires at Treharris—Miners and the Government—Genoa Coal Trade.............. 261 Hull Coal Exports ......................... 267 Coal Trade of Chile ...................... 268 Partnership Dissolved...................... 274 Grimsby Coal Exports—Openings in Russia ... 276 ADVERTISEMENTS. Offices for ADVERTISEMENTS and PUBLICATION— 30 A 31, Furnival Street, Hoiborn, London, E.C. Telegraphic Address—“ Colliery Guardian, Fleet, London.** Telephone—1354 Hoiborn. CONTRACT ADVERTISEMENTS : Prices for SPECIAL POSITIONS on application. Prices for ORDINARY POSITIONS Single Column (3 inches wide) : Far 52 insertions 2s. 6d. b per inB6rtion for each „ 13 „ 3s. 6d. ) inch m dePth- Double Column (6 inches wide), double the above rates. Three Columns (9 inches wide), three times the above rates. MISCELLANEOUS ADVERTISEMENTS Advertisements are inserted on the last white page or leader page at the following rates :— One insertion ... 10s. Od. per inch per insertion. Three insertions ... 9s. 6d. ,, ,, Six insertions ... 9s. Od. ,, ,, A reduction of 25 per cent, is allowed on advertisements of second-hand machinery. Situations Vacant and Wanted : One Penny per word, minimum 2s. 6d. (which must be prepaid). Can be received up to TEN o’clock on Friday morning. (A Classified List appears on page 278.) 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. Offices for Advertisements and Publication :—30 and 31, Furnival Street, Hoiborn, London, E.C. 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. No.—Hoiborn 2763. 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 Oldest Diamond Drill Company. Established 1872. BORING foe ^JINERALS. SPEED AND CERTAINTY. CYLINDRICAL “CORES.” THE AQUEOUS WORKS AND DIAMOND ROCK-BORING Co. Ltd. Guildford 8tm 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. 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 525 Students of this School have been qualified as First and. Second-class Mine Managers. 74 students have passed the Home Office Surveyors’ Exam.; 30 students are now Mines Inspectors. 3,251 students passed Fireman’s Exams. Candidates for the above write without delay for free Syllabus, and book of Previous Examination Questions. (Dept. G.) CAMBRIAN MINING SCHOOL, PORTH, Glam. 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 (W) 5 0, Connaught Road, Cardiff. YEADONS’ LATEST PATENTED BRIQUETTE MACHINERY, For Coal, Coke, Iron and other Ores. YEADON, SON & CO., Engineers, LEEDS, Have a World-wide Reputation, and 38 Years’ Experience. They have supplied MORE BRIQUETTE PLANTS than any other firm in this country. MARITIME COALING ADMINISTRATION Coal Shipping Equipment. Parliament Mansions, Victoria Street, Westminster, England. i For COLLIERIES Rails I and WORKS. Roof Bars I TH0s W. WARD Ltd, Pit PrODS I Albion Works, I I SHEFFIELD. Arches I try us. — INCREASE STEAM CAPACITY OF BOILERS. water HEATER-SOFTENER combi,,e‘j Utilise Exhaust Steam or Gases. Write— The Lawrence Patent Water Softener, &c., Co. Ltd., PARLIAMENT MANSIONS, WESTMINSTER. To Colliery Owners requiring temporary REPRESENTATION FOR PERIOD OF THE WAR. Well known London firm will undertake duties for NOMINAL EX- PENSES ONLY.—Box 6372, Colliery Guardian Office, 30 & 31, Furnival- street, Hoiborn. London, E.C. First-class Certificated Colliery Manager desires change of locality; young, energetic, thoroughly experienced, accustomed to controlling large bodies of workmen and dealing with big outputs (20,000 tons weekly), South Wales coalfield; excellent references.— Full particulars on application to Box 6487, Colliery Guardian Office, 30 & 31, Furnival-street, Hoiborn. London, E.U. 117 anted, Competent Man to Work J V small coal mine in .Staffordshire, by contract, or to act as Manager.—Reply to Box 6489, Cof/ier, Guardian Office. 30&31, Furnival- st., Hoiborn, London, E.C , stating wages required, qualifications and age. WANTED FOR FRANCE, REPRESENTATION FOR ENGLISH COAL. Cd entleman, 48, Belgian Wholesale * Merchant, seeks for France, Agency or Representation for duration of war; will do business in Belgium after the war.—Write, STULTJENS, 37, Oxford-street, Loughborough, Leicestershire. Geo. N. Dixon & Co., 43, Castle Street, Liverpool, Auctioneers and Valuers, COLLIERIES, Brickworks & Mining Plant. Auctioneers & Valuers to the Engineering Trades. KNIGHT & PARTNERS Ltd. 27, Old Queen Street, Westminster, S.W. CORRESPONDENCE INVITED. SALES conducted in all parts of the Kingdom. COAL, IRON & STEEL SHARES WILLIAM CHAPMAN & COMPANY, Stockbrokers. (established since 1851). Cavendish Buildings, Wheeler Gate, NOTTINGHAM. Special Business in Coal, Iron and Steel Shares. Lists, reports, &c., will be forwarded regularly on application. First-class Certificated Colliery Manager Wanted for Colliery in Midlands; output 1,600 per day—Apply, with copy testimonials, to Box 6492, Colliery Guardian Office, 30 & 31, Furnival-street, Hoiborn, London, E.C. A dvertiser, ineligible, Seeks Position as Assistant Secretary, Cashier or Salesman; could provide excellent references.—Box 6491, Colliery Guardian Office, 30 & 31, Furnival-street, Hoiborn, London, E.C. The Advertiser (Box 6453, June 30th) for a first-class Certificated Manager for a Midland Colliery begs to state that the appointment has been made, and he thanks all those who applied for the post. COURSES OF INSTRUCTION IN COALMINING AND SURVEYING, Specially prepared to qualify Students for the Examinations for CERTIFICATES OF COMPETENCY As Colliery Managers, Under-managers and Surveyors. Special Course for Colliery Firemen. Write for Booklet (Post Free) to the Secretary, Colliery Manager’s Aspirants’ Correspondence School, IiBIGH, LANCS. THE UNIVERSITY OF SHEFFIELD. MINING DEPARTMENT. rPhe Matriculation Examination for the JL Degree in Mining will be held on September 12th, 1916. For information, apply to the Registrar before August 26th. The Mining Diploma (Day) Course commences on October 4th, 1916. The Certificate (Saturday Afternoon) Course commences on September 23rd, and the Mining Teachers’ Course on September 30th. The Courses in Electricity Applied to Mining commence on September 23rd. For particulars, apply to W. M. GIBBONS, Registrar. UNIVERSITY OF BIRMINGHAM. SCHOOL OF MINING. Professor..................JOHN CADMAN, C.M.G., D.Sc., F.G.S. Le1Somtc3M* 1n“lljgy“d}J- L' JEFFERY, A.R.S.M , M lnst.M.M. Lecturer in Coal Mining and 1 -m- htjlse rrc Surveying J ’ Lecturer in Mine Rescue Work A. H. CLARK, B.Sc. THE SESSION COMMENCES ON OCTOBER 3rd, 1916. rPhe School of Mining meets the require- JL ments of those who intend to become Practising and Consultative Mining Engineers, Petroleum Technologists, Colliery Managers, Managers of Metal Mines, Teachers of Mining, Mine Surveyors, Land and Estate Agents, Land Owners, Owners of Collieries, and those generally interested in Mines and Quarries. The Degree Course includes instruction in Mathematics, Physics, Chemistrv, Geology and Mineralogy, Mechanical Engineering, Electrical Engineering, Civil Engineering, Mining (Coal, Petroleum and Metal), and Metallurgy, Assaying, and Petroleum Refining. In connection with the Mining Classes there will be frequent visits of inspection to mines in the neighbourhood of Birmingham, and a SUMMER MINING SCHOOL will also be held in the long vacation in some mining district either at home or abroad. The Mining Courses are so arranged as to provide for— Degree Course — 3 vears. Diploma Course —3 years Occasional Mining Students—a complete course in 1 year. A complete Course of PETROLEUM MINING ENGINEERING is given in the University. The course of study extends over three years, and leads to the Degree of B.Sc. Full particulars may be obtained from the SECRETARY of the University. anted for cash in advance, 2,000 tons V V Midland Brights and Nuts, also 1,000 tons Steam Large and Steam Nuts ; also wanted on simple hire, 100 modern Coal Wagons.— DIRECT COADS LTD., Yeovil. For Sale, One Pair of Pulleys, equal new, 8 ft. tread for Uin. rope, with one pair Pedestals and Sole Plates.—PRINCESS ROYAL COLLIERY CO. LTD., Lydney, Glos. For Sale, Two 30 by 9 Lancashire BOILERS, by Danks. insured M.S.U.A. for 1501b.; immediate delivery.—A. UNDERWOOD, 3, Queen-street, E.C. For Sale, Locotype Boilers, 40 h.p., by Fowler and Davey Paxman, 120 lb. steam.—A. UNDERWOOD, 3, Queen street. E.C. TV’anted, 10-ton Second-hand Coal V V WAGONS in good condition, on simple hire for six months or one year.—Apply, PAYNE A CO , Contractors, Warrington. Generator for Sale, in excellent con- dition, self-exciting Westinghouse Alternator, 200 volts, speed 750 r.p m., with controller, switchboard, instruments, etc.; also Laurence Scott 13| kw. d c. GENERATOR, 110 volts, speed 970 r p.m., with switch- board, etc.; offers invited—Box 6493, Colliery Guardian Office. 30 A 31, Furnival-street, Hoiborn, London. E.C. Steam Engine, Hor. Drop Valve, by Robey, of Lincoln, 130 i.h.p., cylinder 16 by 30 in. stroke, flywheel 12 ft. diameter for taking ten 1| in. ropes; offers invited.—Box 6494, Colliery Guardian Office, 30 & 31, Furnival street, Hoiborn, London, E.C. rphe Co-operative Society, Fratton-road, JL Portsmouth, require to purchase during the ensuing twelve months 3 000 to 4,000 tons COAL—House and Nuts. Membership of Society over 14,000 and capital £170 000. Immediate delivery of from 50 to ItO tons is required.—Address replies to SECRETARY, 87, Fratton-rd., Portsmouth. MAPS of the British Coalfields. 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 A 31 Furnival-street, Hoiborn, London, E.C.