512 THE COLLIERY GUARDIAN March 17, 1916. CONTENTS. Editorial Articles :— page Disease v. Accident......................... 513 Increment Duty on Coal Seams................ 513 Mines and the Military Service Act ......... 513 Articles :— The Campine Coal Field ...................... 505 The Jeffrey Centrifugal Mine Fans............ 507 Hauling Coal in Street Subways............... 508 Carbon Dioxide in Extinguishing Mine Fires..... 508 Value of Technical Societies to Mining Engineers 509 Mann's Steam Tractor......................... 509 The German and Austrian Coal and Iron Trades ... 510 Costs and Selling Prices of Coal ............. 511 Trade and the War............................. 518 Canada's Coal Industry ....................... 518 Inter-Relation of Pure and Applied Chemistry... 518 Safety Catches on the Cage ................. 519 The Pressure of Gas in Coal Beds ............. 519 Sealing of Mine Fires ...................... 520 Some Recent Decisions under the Workmen's Com- pensation Act ............................... 522 Mining Industry and Military Service ......... 522 Labour and Wages.............................. 525 Obituary...................................... 525 Open Contracts .............................. 526 Explosives in Coal Mines...................... 526 The Freight Market ........................... 526 Coal and Coke Exported from Ports in England, Scotland and Wales ........................... 527 Coal and Coke Shipped for London and Other Ports in the United Kingdom ... .............. 527 Abstracts of Patent Specifications Recently Accepted.................................... 528 New Patents Connected with the Coal and Iron Trades...................................... 530 Government Publications ....................... 530 Publications Received ....................... 530 Law Intelligence ................................ 523 Current Science and Technology............. 510 Indian and Colonial Notes ................. 521 Parliamentary Intelligence ................. 523 Notes from the Coal Fields .....;........... 524 Coal, Iron and Engineering Companies ....... 527 The Coal and Iron Trades.................514—517 The London Coal Trade .................. 517 The Tin-plate Trade .......................... 517 The By-Products Trade ........................ 518 Report of Meeting :— Manchester Geological and Mining Society....... 511 Letters to the Editors :— Estate Management in Mining Areas...... 521 Miscellanea :— Cleveland and the Carnegie Research Fund . 511 Estate Management and Mineral Valuations— South Wales Non-Unionist Agreement..... ,521 Grimsby Coal Exports ..................... 522 North Staffordshire Institute of Mining and Mechanical Engineers—Partnership Dissolved— The Midland Institute of Mining, Civil and Mechanical Engineers ...................... 523 New Caucasian Coal Bed—Hull Coal Exports— Coal Shipments from Ports in the United King- dom during February ..................... 527 Peatv. Ccal in Finland—Exports and Imports of Goal Tar Products.......................... 530 ADVERTISEMENTS. Offices for AOVEmriSEEiEMTS and . PUBLICATION— 30 & 31, Furnival Street, Holborn, London, E.O> 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. "1 per insertion for each ,, 26 „ 3s. Od. > r ... _ „ 13 „ ■ 3s. 6d. ) moh 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. 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 532). SUBSCRIPTIONS. The Colliery Guardian, published at 2.30 p.m. on Friday, can be supplied direct from the Publishiing Offices, post free for twelve months, at the following rates, payable in advance:— For tire United Kingdom ... ... £1 3 6 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. 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.—Holborn 2763. VENTILATING FANS AND ENGINES. See Advertisement appearing on front Cover of alternate weeks, THE WADDLE PATENT FAN AND ENGINEERING CO. LTD., Llanmore Works Llanelly BORING for MINERALS, &o. Solid Specimens of the Strata obtained. Established 1888. Work guaranteed. FOR W GUARANTEED. VIVIANS BORING COMPANY J. S. DAVIDSON & SON, St. Bees, CUMBERLAND. “ CROWN ” BOILER COVERINGS of Outstanding Superiority. Intensest Heat cannot Impair. Union Works, Cooley, nr. Manchester. SUTCLBFFE BROS. STEEL Rails Roof Bars Pit Props Arches For COLLIERIES V ’• and WORKS. THO* W. WARD Ltd, Albion Works, SHEFFIELD. TRY US. ------ HEAD, WRIGHTSON AND CO. LTD., — for — COLLIERY PLANT. See Page Advertisement in March 10 issue. Expert Advice on all questions arising1 out of INCOME TAX, “EXCESS” PROFITS TAX, RELIEF to “CONTROLLED” ESTABLISHMENTS, LOCAL RATES, etc. THE MANUFACTURERS’ ASSOCIATION LTD., 110, Cannon-street, London, E.C. B. Llewellin Evaas 120, BUTE FBOPBIETOB OF THE Cardiff Brattice Cloth Company, AffiOT BW Bebel’s Explosives ONLY A FEW LEFT. COLLIERY MANAGER’S POCKET BOOK, - - For 1916. - - PRICES. s. d. Cloth ............... 2 0 Roan (Gilt) ... 3 0 Calf (Gilt) ... 4 6 Postage extra.—Copies are sent by Parcel Post: One copy 4d., and Id. for each additional copy up to 11 lb. THE COLLIERY GUARDIAN CO. LTD., 30 & 31, Furnival Street, Holborn, London, E.O. Wanted, Colliery Surveyor (exempted) in Liverpool surveyor’s office.—Apply own writing, stating age, reason exemption, experience, and wages required, accompanied by two copies recent testimonials, Box 6355, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. TAT anted, a competent man to take y V charge of a colliery office and supervise sales office in Glamorgan- shire for a colliery with an output of 400 tons a day near the shipping port; good experience in colliery accounts and methods essential.—Apply, giving full details, experience, and salary required, to Box 6358, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C, Geo. N. Dixon & Co., 43, Castle Street, Liverpool, Auctioneers and Valuers, COLLIERIES, Brickworks & Mining Plant. Wanted, Night Under-manager for the Kilburn seam, first or second-class certificate holder.—Give age, past experience and copies of recent testimonials, WEST HALLAM COLLIERIES, Ilkeston. ssistant Manager wanted for large road stone quarry, to supervise works and office, under principal; salary about £240 per annum, according to experience and ability.—Apply, stating age and experience, to Box 6361, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. AATanted at once. First-class Certified V V MANAGER for developing colliery in the Midlands; must be practical and capable of handling large numbers of men ; salary £500 per annum.—Apply, stating age, experience, and giving references, to Box 6360, Colliery Guardian Office,30&31, Furnival-st., Holborn, London, E.C. A dvertiser, 32, desires Situation as Ju COLLIERY MANAGER or UNDER-MANAGER ; experienced, accustomed to thin and thick seams, gas, coal cutters, extensive haulage, pumps, costs, &c.; disciplinarian, excellent testimonials.—Apply, Box 6350, Colliety Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. In Bankruptcy, re CHARLES WALKER,, Pit Sinker, Coventry. rj^he Trustee is authorised to Offer for fl Sale by Private Treaty his interest in British Patents Nos. 892 of 1912 and 204 of 1913 for the sinking of colliery and other shafts. The inven- tion is particularly suitable for sinking where water bearing strata or running sand are likely to be encountered, and shafts dealt with by Walker’s process have been successfully completed. For further particulars, apply to the TRUSTEE, C. F. B. Flint (of the firm of Flint & Thompson), Chartered Accountants, 71, Temple Row, Birmingham. MAIDSTONE GAS COMPANY. rPhe Directors of the Maidstone Gas JL Company invite TENDERS for the supply of 16,000 tons of Un- screened Durham GAS COALS delivered in barge alongside their Wharf on the Medway, Maidstone, over the thirteen months commencing June 1, 1916. The Directors also invite TENDERS for 10,000 tons of Screened Yorks GAS COALS or Washed Yorkshire NUTS delivered at Maidstone West Station over the same pe iod. Any further particulars required can be obtained from the undersigned, to whom tenders should be delivered not later than March 22. The Directors do not bind themselves to accept the lowest or any tender. FRANK LIVESEY, Engineer and Manager. 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. HUBERT GBEENWELL, F.S.S., Assoc.M.I.M.E. (At present on Active Service}. LONDON, FRIDAY, Al ARCH 17, 1916. The London coal trade continues in a very critical state. Depots are practically clear of stock, and the demand is strong. Colliery supplies are inadequate, and both householders and factories are working from hand to mouth. Prices are at their maximum. The Tyne and Wear prompt coal markets remain unsettled owing to the poor supply of tonnage, and collieries in the district find it difficult to continue working through inability to clear away the output] Throughout the Midland counties the scarcity of fuel has become pronounced, and even contract accounts cannot be fully supplied. At Cardiff, tonnage deficiency continues to disturb the tone of the coal market. The demand for Scottish coal has again been brisk, and here, too, the supply has proved inadequate. A paper on the subject of “Extinction of Mine Fires” was read before the Manchester Geological and Mining Society, on Tuesday. The North Staffordshire Institute of Mining and Mechanical Engineers will hold a general meeting at Stoke-on-Trent on the 27th inst. On Saturday last the Court of Appeal dismissed the appeal of the Sheffield and South Yorkshire Navigation Company re increment duty on minerals. A lecture “ On the Search for Concealed Coal Fields in England and Wales,” will be given by Dr. A. Strahan, Director of the Geological Survey of Great Britain, before the Royal Institution, this evening (Friday), at 5.30 p.m. Yesterday, Thursday, Prof. H. Sexton lectured to the Ipswich Engineering Society on “ Fuel Economy and Gaseous Fuel.”