1276 THE COLLIERY GUARDIAN. December 18, 1914. CONTENTS. Editorial Articles :— page The Supply of Pit Timber ..............’.... 1277 The Duties of a Colliery Manager ......... 1277 Articles New Coke Oven and By-Product Recovery Installa- tion at Newton Cap Colliery, Bishop Auckland... 1267 Supplies of Pit Timber...................... 1271 Firedamp Detectors ......................... 1274 Trade and the War........................... 1278 Substitutes for Wooden Roof Supports........ 1283 Description of Water Dams in Coal at Netherseal Colliery ................................. 1285 Mining and Other Notes...................... 1286 Mine Managers* Examinations................. 1287 Labour and Wages............................ 1287 The Freight Market ....................... 1290 Open Contracts.............................. 1290 Obituary.................................... 1290 Abstracts of Patent Specifications Recently Accepted.................................. 1291 New Patents Connected with the Coal and Iron Trades ................................... 1292 Publications Received ...................... 1294 Government Publications .................... 1294 Law Intelligence .............................. 1277 Notes from the Coalfields ...................... 1288 Coal, Iron and Engineering Companies ........... 1291 The Coal and Iron Trades .................. 1278—1282 The London Coal Trade ......................, 1278 The Tin-plate Trade ........................ 1278 The By-Products Trade ...................;.... 1282 Reports of Meetings :— North of England Institute of Mining and Mechanical Engineers .................... 1273 Mining Institute of Scotland................ 1284 Letters to the Editors :— '» Electric Lamp Renewals : Correction—British and Foreign Patents .......................... 1285 Miscellanea :— Hull Coal Exports — South Staffordshire and Warwickshire Institute of Mining Engineers— Provision of Surveying Instruments ........ 1271 Income Tax and Mineral Rights Duty—West Yorkshire Minimum Wage Dispute ......;.... 1275 Immingham Coal Exports-Grimsby Coal Exports 1286 Wharncliffe Silkstone Prosecution ......... 1290 Partnerships Dissolved.................... 1294 ADVERTISEMENTS. Offices for ADVERTISEMENTS and PUBLICATION- 30 & 31, Furnival 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 (3 inches wide) : For 52 insertions 2s. 6d. „ 26 „ 3s. Od. [ „ 13 „ 3s. 6d. ) per insertion for each 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. 6d. 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 1296.) 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.......... £1 1 0 For Foreign Countries and Colonies £17 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 and 31, Furnival Street, Holborn, London, E.C. Telegraphic Address, “Colliery Guardian, Fleet, London.’’ Telephone—1354 Holborn. “IUTessrs. HARRIS and MILLS, ■■■*** Chartered Patent Agents (Estab. 1866), 34-35, HIGH HOLBORN, LONDON, W.C., Offer SPECIAL TERMS and manufacturers During the War. Particulars of the new Act enabling persons to work Patents or use Trade Marks OWNED BY GERMANS AND AUSTRIANS, sent post free. ASSOCIATION OF PRIVATE OWNERS OF RAILWAY ROLLING STOCK. Formedin 1891for 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 ~jyj~INERAL8. SPEED AND CERTAINTY. CYLINDRICAL “CORES.” THE AQUEOUS WORKS AND DIAMOND ROCK-BORINC Co. LTC. 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. HEAD, WRIGHTSON AND CO. LTD., -------- FOR-- COLLIERY PLANT. See Page Advertisement in December 11 issue. * 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. Simply unimpairable by heat. 96°/0 SAYING in Condensation. Greatest Economy & Service. Nearly 5,000 Users. SUTCLIFFE BROS. nr. Manchester* ’ LOGOMOTIVES For Sale or Hire. ALWAYS IN STOCK. QUICK DESPATCH. THG? W. WARD Ltd., Sheffield. Telegrams—“Forward.” Telephones—4321 (6 lines). TIT anted, a reliable Foreman for Bye- , V V product coke oven plant, semi-direct recovery.—Apply, stating age, and giving copies only of testimonials, to Box 5879, CAliery Guardian Office, 30 A 31, Furnival-street, Holborn. London, E.C. NEW PRESCRIBED FORMS UNDER THE METALLIFEROUS MINES REGULATION ACTS AND THE QUARRIES ACT, 1894. These new forms are to be used for Return of Persons employed in and about the Mines or Quarries, and have to be returned to the Inspector before February 1,1915, under a penalty not exceeding £20 on conviction. FORMS - Price 6d. (post free, 7d.) per doz. To be obtained from THE COLLIERY GUARDIAN, 30 & 31, Furnival Street, London, E.C.I Geo. N. Dixon & Co., 43, Castle 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, Wbdnbsbury 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. (SoUicry Suarrtian AND Journal of the Coal and Iron Trades. Joint Editors— J. V. ELSDEN, D.Sc. (Lond.), F.G.S. HUBERT GREENWELL, F.S.S., Assoc.M.I.M.E. LONDON, FRIDAY, DECEMBER 18, 1914. The London coal trade continues exceedingly brisk. Public prices advanced on Friday last Is. per ton, and all pit prices are either withdrawn or are advanced. Altogether the market is very excited, and the shortage of all qualities by rail and by sea is causing intense difficulties. The depot trade is slow. The main features of the coal export trade during the past week have not changed, except to become slightly more accentuated. Tonnage, for instance* has been even less plentiful owing to the severe weather. Curiously enough, Cardiff has been an excep- tion, for boats have arrived quite freely. Prices here have strengthened, and the outlook appears much more favourable. On the Tyne and Wear, despite existing difficulties, a firmer tone is noticeable. The pre- holiday demand is having its effect upon the inland trade markets. Those in Lancashire show an all round improvement, whilst marked increases in demand are also found throughout Yorkshire and Derbyshire. In both the latter cases wagon scarcity is causing great inconvenience. The Scottish coal trade is again active. Another paper by Mr. James Lomax, dealing with recent microscopic investigations and their relation to modern mining problems, will be read at the meeting of the South Staffordshire and Warwick- shire Institute of Mining Engineers, at Birmingham, on Monday next. Eight hundred miners are reported to have been entombed by a coal mine explosion in Japan. The actions of the Glamorgan Coal Company and the Powell Duffryn Coal Company against the Glamorgan County Council and others, which arose out of the Tonypandy riots of 1910, and in which the colliery companies claimed damages for maintaining extra police on that occasion, have now been concluded. Judgment was given in favour of plaintiffs. The Board of Trade and the Board of Agriculture have now issued reports dealing with the supplies of pit timber at home and those of Newfoundland and Canada. A meeting of the Mining Institute of Scotland was held on Saturday last. Mr. G. S. Cooper read a paper on the modern developments of by-product coking. According to the report of the Inland Revenue Commissioners for 1912-13, the gross assessment on profits of coal and other mines during that period amounted to £20,298,569, against £19,680,637 in 1911-12. A case raising an interesting minimum wage point was decided in the Court of Appeal on Tuesday. The parties were : Bar well v. Newport Abercarn Black Vein Steam Coal Company Limited. The hearing of the Home Office prosecution against the owners and management of the Wharncliffe Silkstone Colliery for alleged contraventions of the Coal Mines Act was commenced at Barnsley on