550 THE COLLIERY GUARDIAN. March 14, 1913. CONTENTS. Editorial Article Malingering .......................... 551 Articles :— The Heating of Safety Lamp Gauzes in Fiery Atmospheres.................................. 535 The Pyro Boiler-Cleaning Apparatus................... 536 The “P.P.” Safety Shot-firing Appliances ............ 540 The Valuation of Mineral Properties.................. 542 Approved Safety Lamps ............................... 543 Notes from South Wales............................... 544 Pitch Cancer......................................... 552 Coastwise Shipments in January....................... 552 Colliery Accidents ................................. 552 Obituary........................................... 553 Labour and Wages .................................... 555 The Determination of Water in Coal................... 557 Mining and Other Notes .............................. 557 The Freight Market ................................ 559 Coal and Coke Exported from Ports in England, Scotland and Wales .......................... 559 Coal and Coke Shipped for London and Other Ports in the United Kingdom ....................... 559 Exports of Coal, Coke and Manufactured Fuel from the United Kingdom ..................... 560 Open Contracts ...................................... 560 Abstracts of Patent Specifications Recently Accep ted 562 Government Publications ............................. 564 Publications Received ............................... 564 New Patents Connected with the Coal and Iron Trades............................................. 564 Continental Mining Notes ........................... 545 Indian And Colonial Notes ........................... 553 Parliamentary Intelligence .......................... 553 Law Intelligence .................................... 553 Coal, Iron and Engineering Companies ................ 558 The Coal and Iron Trades ............. 546—459, 554 The By-Products Trade] ............................. 555 The Tin-plate Trade ................................. 501 The London Coal Trade ............................... 554 Reports of Meetings :— South Staffordshire and Warwickshire Institute of Mining Engineers .................................. 536 Midland Counties Institution of Engineers...... 541 Letters to the Editor :— Review of “Coal and the Prevention of Explosions and Fires in Mines”—Undeveloped Land Duty— The Status of Mine Surveyors ............ 556 Miscellanea :— Grimsby Coal Exports—Partnerships Dissolved— • Shipments of Bunker Coals ............... 536 Proposed Light Railway for Pembrokeshire Coal- field ................................... 540 Iron Ore in Raasay......................... 545 Home Office Prosecution in Scotland........ 551 Lancashire and Cheshire Miners'’ Relief Society ... 552 Hull Coal Imports—Hull Coal Exports........ 556 Electrical Plant in the North of England—Hull Contract Case ........................... 564 SUBSCRIPTIONS. The Colliery Guardian is published at 2.30 p.m. on Friday, and includes the latest intelligence. The Annual Sub- scription is 24s.; but if paid in advance, 21s. In both cases the charge includes delivery free by post in the United Kingdom. Post free and prepaid to Foreign Countries, .61 7s. 6d. ADVERTISEMENTS. ADVERTISEMENT DEPARTMENT. H. Greville Montgomery, 43, Essex-street, Strand, London, W.C., and 27, Brasenose-street, Manchester. Advertisements are inserted on the last white page and leader page at the following rates:— Situations Vacant and Wanted : One Penny per word (which must be prepaid), minimum 2s. 6d. Other Advertisements : One insertion Three insertions Six insertions . 10s. Od. per inch per insertion. 9s. 6d. „ ,, 9s. Od. „ ,, A reduction of 25 per Cent, is allowed on advertisements of second-hand machinery. 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. ( for each „ 13 „ 3s.6d. 5 meh m depth. Double Column (6 inches wide), double the above rates. Three Columns (9 inches wide), three times the above rates. Miscounts or Commissions are paid to Auctioneers and Advertising Agents, (A Classified Liat appears on page 566.) 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. Holbom 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 Bights 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, ORING MINERALS. SPEED AND CERTAINTY. CYLINDRICAL “CORES.” THE AQUEOUS WORKS AND DIAMOND ROCK-BORING Co. LTD 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, PORTH, GLAM. Principal: WILLIAM THOMAS, M.Inst.M.E., M.B., Society of Arts. A SCHOOL of Unequalled Reputation. No Branches. No Agents. Students get their full money’s worth in Lessons, Specimen Answers and Personal Instruction. Influential Employers give preference to Students prepared at this School. Last Inspectorate Exams., 5 Students, passed and appointed. LESSONS BY POST for Mine Officials and Mining Students, &c. The most accurate way of estimating a Tutor’s success is by the per- centages of his passes. At the 1912 Cardiff Mine Managers’ Home Office Exams. 172 Students sat from this School, 140 of them were successful. At Glasgow Mining Exam. 38 Cambrian Students sat, the 38 were successful. Write immediately for free Booklets, &c. Secretary: Cambrian Mining School, Glanffrwd, Porth, Glam. LOGOMOTIVES For Sale or Hire. ALWAYS IN STOCK. QUICK DESPATCH. THO? W. WARD Ltd., Sheffield. Telegrams—** Forward.” Telephones—4321 (6 lines). TH a IT Iff Q is conducted by lIlU U.in.d. T. SOUTHERN H. W. HALBAUM (Estab. 1883). (late H.M.I.M.) (Greenwell Medallist), men quaPfied to prepare you for the highest mining positions.. The U.M.S. is the sure road to promotion. Employers know that OUR PRACTICAL TRAINING FITS MEN FOR POSITION. That is why U.M S. men obtain and hold nearly all the best positions. 42 of H.M. Inspectors are U.M.S. men. LESSONS BY POST only. Syllabus free. Dept. A3, The U.M.S., CARDIFF. Messrs. John Scowcroft & Co. Ltd., Hindlev Green Collieries, Wigan, have for sale .— 200 ten-ton New Specification WAGONS, full size, five doors, built by the Wigan Wagon Co. Ltd., 1905, price £62 each, or 125 twelve ton New Specification WAGONS, full size, five doors, built by the Ghorley Wagon Co. Ltd. and Ince Wagon Co. Ltd. in 1907, price £73 each. Th a wagons are in excellent conditicn and immediate delivery can be given. Deferred payment can be arranged if desired. For orders to inspect, apply as above. “ "VTonflam ” (a compound for preventing 1 5 explosions by reason of coal dust). Wanted, gentlemen with good connections in colliery districts to act as AGENTS on commission; references required.—Apply, the NATIONAL COAL DUST EX- PLOSION PREVENTION CO., 71, Albion-street, Leeas (.letter only). TXTanted, Certificated Under-Mana ger V V for a colliery in the Wigan district.—Apply, stating age, experi- ence, and salary required, with not less than 2 testimonials, to Box 17, Examiner Office, Wigan. The Colliery Ready Reckoner and Wages CALCULATOR. By JAMES IRELAND. •* Will be the means of preventing many disputes between pay clerks and colliers.”—Mining owrxuZ. Colliers Guardian Office, 30 & 81, Furnival-street, Holbom. London, E.C. Cloth, limn, price Is. 6d.; post free, Is id. 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 NEW FORMS, &c., RECENTLY ISSUED UNDER THE COAL MINES ACTS. ---- See Page 574. ---- This List of New Prescribed Forms, $c., appears weekly in the “ Colliery Guardian ” TUBES & FITTINGS. IRON AND STEEL. Tubes for Gas, Water, Steam, and Compressed Air. Electric Tramway Poles, Pit Props, High Pressure Steam Mains, Ac. JOHN SPENCER LTD., Globe Tube Works, Wednerbury. 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. Txlxgrams—” Osbxoxs, Nxwca.8tui-on-Tyn»." %* For other Miscellaneous Advertisements see Last Whits Page, Forthcoming Annual Meetings. International Geological Congress— August 21, 1913 (Toronto) North of England Institute of Mining and Mechanical Engineers ... ... ... ... August 2,1913 South Wales Institute of Engineers... March 18,1913 Institution of Mechanical Engineers— Annual Dinner ......... April 17,1913 Mining Institute of Scotland ... April 12, 1913 Manchester Geological and Mining Society— October 14, 1913 Institution of Mining Engineers— June 5 & 6, 1913 (London) Sept. 24, 25 & 26, 1913 (Manchester) Midland Institute of Mining, Civil and Mechanical Engineers ... ... ... ... July 20,1913 Midland Counties Institution of Engineers, Sept. 1913 South Staffordshire and Warwickshire Institute of Mining Engineers..............October 20,1913 Iron and Steel Institute ..........May 1 & 2, 1913 LONDON, FRIDAY, MARCH 14, 1913. Last month the quantity of coal, coke and manufactured fuel exported from the United! Kingdom amounted to 5,822,925 tons, valued at- £3,982,112, as compared with 5,734,404 tons, valued at £3,615,754, in February 1912, and 5,074,460 tons, valued at £2,951,990, in- February 1911. The total quantity of exports during the* first two completed months of the present year reached 12,197,077 tons, valued at £8,326,415, as- against 11,468,382 tons, valued at £7,037,798. and 10,297,401 tons, valued at £5,980,449, in the corresponding periods respectively of 1912 and! 1911. The average value of coal, coke and manufac- tured fuel exported from the United Kingdom^ during February was 13s. 8 Id. per ton, as- compared with 12s. 6’01d. in February 1912 and* Ils. 7'6d. in February 1911. The value during the first two completed* months of the present year is 13s. 7’8d. per ton,, as compared with 12s. 3 2d. and Ils. 7’3d. respectively in the corresponding periods of 1912: and 1911. Of the total exports of coal during February,, the mean value of the large coal exported was 15s. l*4d. ; through-and-through (unscreened)* coal, Ils. 10’4d.; and small coal, Ils. 2 03d. The average value of all kinds of coal exported was- 13s. 5 9d., an increase of 0*5d. as compared with the preceding month. Otherwise divided, it fetched the following values:—Steam coal, 13s. 10 5d.; gas coal, Ils. 8’7d. ; anthracite, 15s. 10’2d.; household coal, 12s. 10 08d.; and other sorts of coal, 12s. 4’2d. The value of the coke exported was 18s. 9’8d. per ton, and of the manufactured fuel 17s. 0’9d. per ton. A special conference of the Miners’ Federation of Great Britain will be held in London on Wednesday, March 19, to discuss the three-shift system in Northumberland. It is proposed to give a handsome testimonial to Mr. Barrowman, who, as recently announced,. is resigning the post of secretary to the Mining Institute of Scotland, after having filled it with great ability for the long period of 30 years. A syndicate has been formed at Cardiff to develop a large steam coal area at Glyncorrwg, in Mid-Glamorgan. The annual meeting of the Institute of Metals was held this week at the Institution of Mechanical Engineers, Prof. Huntington presiding. The United States Bureau of Mines has asked Congress for an appropriation of 500,000 dols. for the provision of new buildings in connection, with the Pittsburg experiment station.