370 THE COLLIERY GUARDIAN. August 14, 1914. CONTENTS. Editorial Articles — page The Miners and the War....................... 371 , The Export Trade .......................... 371 The Seventh Lievin Report.................... 371 Articles :— The Diamond Centre-gate Conveyor ............ 361 ' An Analytical Study of the Principal Systems of Coke Ovens ............................... 363 The Ryland Worm Screw Pulley Block........... 363 Self-contained Rescue Apparatus and Smoke Helmets 364 The Rosehall Signal Indicator ............... 365 Coalmining in Victoria in 1912 .............. 36) Labour and, Wages............................ 372 Colliery Accidents .......................... 372 On a Boring for Coal at Remington., Somerset.. 373 Coal Production of Canada................... 374 A Comparison of Steam and Electric Winding Engines .................................. 374 Mining and Other Notes ...................... 374 The Testing of Fans : Measurement of Pressure ... 375 The Inflammability of Firedamp and Other Gases 376 Book Notices................................. 377 Magnifying Thermometers...................... 377 The State Mines at Wonthaggi, Victoria....... 378 Obituary.................................... 378 The Freight Market .......................... 381 Exports of Coal, Coke, and Manufactured Fuel from the United Kingdom .................... 382 Open Contracts.............................. 382 Abstracts of Patent Specifications Recently Accep ted 383 New Patents Connected with the Coal and Iron Trades ................................... 384 Government Publications ..................... 384 Publications Received ....................... 384 Catalogues and Price Lists Received.......... 384 Indian and Colonial Notes ...................... 380 Continental Mining Notes ..................... 375 Notes from the Coalfields ...................... 379 Coal, Iron and Engineering Companies ........... 381 The Coal and Iron Trades ................ 367—369, 373 The Tin-plate Trade ......................... 369 The By-Products Trade ....................... 369 The London Coal Trade ....................... 374 Report of Meeting:— Mining Institute of Scotland................. 366 Letters to the Editors : — The War and the Supply of Colliery Timber..... .380 Miscellanea :— Immingham Coal Exports—Partnerships Dissolved 363 Rescue Apparatus in the United States ....... 366 Volunteer Civil Force ....................... 374 Grimsby Coal Exports ........................ 375 Timber, etc., in Collieries and Important Industries 377 Hull Coal Imports—Shipments of Bunker Coals ... 381 Hull Coal Exports ........................... 382 ADVERTISEMENTS. Offices for ADVERTISEMENTS and PUBLICATION— 30 & 31, FurnsvaB Street, Holborn, London, E.C, Telegraphic Address—“Colliery Guardian, Fleet, London.” Telephone—1354 Holborn. •CONTRACT ADVERTISEMENTS : Prices for SPECIAL POSITIONS on application. Prices for ORDINARY POSITIONS :— . Single Column (8 inchc- s wide): For 52 insertionw 2s. 6d. . . 2^ gg £ per insertion for eacn ” 13 ” y inch in 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. 64 (which must bo prepaid). Can be received up to TEN o’clock on Friday morning. (A Classified List appears on page 386 j 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, payable in advance:— For the United Kingdom......... JS1 1 O For Foreign Countries and Colonies «£1 7 6 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 & 31, Fur- nival Street, Holborn, London, E.C. Telegraphic Address—" Collie ar Guardian, Fleet, London.” Telephone—1354< Holborn. Established 1866. Patents, Designs and Trade Marks. Harris and Mills, Chartered Patent Agents, 34 and 35, HIGH HOLBORN, LONDON, W.C. Telegraphic Address—" Privilege, London.” Tel. No. Holborn 2763. Circular of useful information and prices for British and Foreign Patents post free. Chart of 187 Mechanical Motions with description of each, post free 6d. 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 for qyfINERALS. SPEED AND CERTAINTY. CYLINDRICAL “ CORES.” THE AQUEOUS WORKS and DIAMOND ROOK-BORING Co. Lit. Guildford 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 Cambrian School of Mines, CEMETERY ROAD. FORTH, GLAM. An University Training at Your Own Home. Lessons and Instruction by Post for candidates for FIRST and SECOND Class Mine Managers’ and Mine Surveyors’ Home Office Examinations; Surveying and Electrical Engineering for London City Guild’s Examina- tions ; also A.M.E.E. Examinations and Government Inspectors’ Exams. Candidates for the above write without delay for free Syllabus, and book of Previous Examination Questions. (Dept. G.) CAMBRIAN MINING SCHOOL, PORTH, Clam. Briquette Machinery Ltd., 161, Water Lane, LEEDS. Machinery for Briquetting Peat, Lignite, Coke, Coal, Iron, Copper, Nickel, Cement; Also Sawdust, Waste Cereals, Offals, Sewage. PATENT COAL DRIER. The UNIVERSAL MINING SCHOOL (F.stab. 1883) is conducted by T. A. SOUTHERN (late H.M.I.M.) and H. W. H ALB AUDI (Greenwell Medallist), men qualified to prepare you for the highest, mining positions. The U.M.S. is the surest road to pro- motion. U.M.S men obtain and hold nearly all the best positions. F<>r example, 48 of H.M. Inspectors are U.M.S. men. Lessons by post only. Syllabus and advice free. Write to Dept. C.G., THE U.M.S., 50, Connaught Rd., 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. “CROWN” BOILER COVERINGS encased in STEEL SHEETING. Simple, Cool, Strong, Removable. Cannot be impaired however intense the heat. 96°/o SAYING in Radiation. Highest Economy, Longest Service. Nearly 5,000 Users. SUTCLIFFE Bros., Union Works, Godley, nr. Manchester. LOCOMOTIVES For Sale or Hire. ALWAYS IN STOCK. QUICK DESPATCH. THO* W. WARD Ltd., Sheffield. Telegrams—"Forward.” Telephones—4321 (6 lines). Wanted, First - class Certificated MANAGER, small colliery.—St,ate experience and salary required, Box 5768, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. Mining Engineer, with First - class manager’s certificate, is open to take temporary or permanent charge of colliery either as Manager or otherwise : 30 years’ varied experience. —Apply in first instance, "A. EC. B.,” Box 5771, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. Wanted for large colliery in North Wales, WORKING ELECTRICIAN to take charge of A.C and D.C. electrical plant: must have experience in collierv work in all branches. —Apply, stating age, experience, and wages required, to Box 5772, Colaeiy Guardian Office, 30 & 31, Furnival-street, Holborn. London. E.C. Student, aged 22, who has completed the course for Degree in Mining’at a University, wishes to be with mining engineer having good connection, to obtain experience. — State full particulars, Box 5769, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. s Assistant to Manager or Surveyor, or any place of trust, Yorkshire preferred ; fir>t class certificate, acre 34, good references.—Apply, Box 5764, Colliery Guardian Office, 30 & 31, Furnival street, Holborn. London, E.C. T/’lectric Generating Set, direct current, JLJ 200/300 k., 500 vobs. or thereabouts, with Engine complete, 1001b. steam pressure, wantad.— Give full particulars and where to be seen, to Box 5773, Collierv Guaraian Office, 30 & 31, Furnival-st., Holborn, London, E.C. Gunmetal and Brass Scrap Wanted.— Founders of Gunmetal. Bra=s or Phosphor Bronze Castings or Fittings.—HUNT & MITTON LTD., Oozelts-street North, Birmingham. Geo. N. Dixon & Co., 43, Cattle Street, Liverpool, Auctioneers and Valuers, COLLIERIES, Brickworks & mining Plant. TUBES AND FITTINGS, IRON AND STEEL Tubes for Gas, Water, Steam, and Compressed Air. Electric Tramway Poles, Pit Props, High. Pressure Steam Mains, &c. JOHN SPENCER LTD., Globe Tube Works, Wednesbury. J. W. BAIRD AND COMPANY PITWOOD IMPORTERS, WEST HARTLEPOOL, YEARLY contracts entered into with collieries. OSBECK & COMPANY LIMITED, PIT-TIMBER MERCHANTS, NEWCASTLE-ON-TYNE. SUPPLY ALL KINDS OF COLLIERY TIMBER. Telegrams—“ Osbecks, Newcastle-on-Tyne.” *#* For other Miscellaneous Advertisements see Last White Page. AND Journal of the Coal and Iron Trades. Joint Editors— J. V. ELSDEN, D.Sc. (Lond.), F.G.S. HUBEBT GREENWELL, F.S.S., Assoc.M.I.M.E. LONDON, FRIDAY, AUGUST 14, 1914. Decrees have been issued prohibiting the exporta- tion of coal and coke from the Netherlands. Italy has prohibited the exportation of coal. The exporta- tion and transit is prohibited by Germany of raw materials necessary for the production and use of war material, included being iron ore, coal, lignite, coke and briquettes. Norway has prohibited the exportation of coal, coke and mineral oils. Spain has prohibited the export of coal. The exports of coal, coke, and manufactured fuel from the United Kingdom during last month show a decrease when compared with the corresponding months of the two previous years. The actual quantity was 6,917,853 tons, valued at £4,719,839, whilst the figures for July 1913 and 1912 were 7,275,630 tons, valued at £5,119,833, and 7,319,789 tons, valued at £4,558,936, respectively. Eor the first seven months of the present year the exports totalled 43,066,760 tons, valued at £29,731,295, as against 44,323,767 tons, valued at £30,959,085, and 34,516,503 tons, valued at £21,685,450, respectively, in the corresponding periods of 1913 and 1912. The average value of coal, coke and manufactured fuel exported from rhe United Kingdom during July was 13s. 7’7d. per ton, as compared with 14s. 0-8d. in July 1913, and 12s. 54d. in July 1912. The value during the first seven completed months of the present year is 13s. 9 6d. per ton, as compared with 13s. ll’6d. and 12s. 6’7d. respectively in the corresponding periods of 1913 and 1912. Of the total exports of coal during July, the mean value of the large coal exported was 15s. 3’03d.; through-and-through (unscreened) coal, 12s. 0 2d. ; and small coal, 10s. 8’6d. The average value of all kinds of coal exported was 13s. 5*8d., an increase of O’3d. as compared with the preceding month. Other- wise divided, it fetched the following values:—Steam coal, 13s. 10’7d. ; gas coal, 12s. 2*3d.; anthracite, 14s. 4’6d. ; household coal, 12s. 7-6d. ; and other sorts of coal, Ils. 7-8d. The value of the coke exported was 16s. 2-2d. per ton, and of the manufac- tured fuel 17s. 3*3d. per ton. In consequence of the present situation, the Wigan Coal and Iron Company have deemed it desirable to suspend the distribution of interim dividends. The Alining Institute of Scotland met at Glasgow on Saturday, when Mr. Janies Black read a paper on “ The Rosehall Signal Indicator.” A second paper entitled “ Fan Testing, with Special Reference to the Measurement of Pressure,” was contributed by Mr. Thomas Bryson. After a prolonged enquiry, the inquest upon the bodies of the 12 miners who lost their lives in the Wharncliffe Silkstone Colliery explosion, on May 30, concluded yesterday (Thursday). The jury found that the men lost their lives by an explosion of coal