468 THE COLLIERY GUARDIAN. February 27, 1914. CONTENTS. PAGE Editorial Articles .-— Stonedusting: Practical and Theoretical..... 469 The Use of Rescue Appliances ............... 469 ; Articles :— Geology of the South Staffordshire Coalfield. 455 Mine Managers and Surveyors" Examinations .. 456 The Hygienic Aspect of the Coalmining Industry 457 The Use of Rescue Apparatus in Mines........ 461 The Senghenydd Disaster .................... 464 Explosives in Coalmines .................. 470 Labour and Wages............................ 471 Mining and Other Notes .................... 474 Spontaneous Combustion in Coalmines......... 475 The Freight Market ......................... 476 Catalogues and Price Lists Received ........ 476 Open Contracts............................ 479 Obituary.................................. 480 Abstracts of Patent Specifications Recently Accep bed 480 New Patents Connected with the Coal and Iron Trades .................................... 484 Government Publications ................ 484 Publications Received ...................... 484 Continental Mining Notes ........................ 467 Notes from the Coalfields ....................... 473 Coal, Iron and Engineering Companies ............ 475 Monthly List of Recent Coal Literature............ 477 The Coal and Iron Trades ............ 465—467, 471, 472 The London Coal Trade ...................... 472 The By-Products Trade ...................... 474 The Tin-plate Trade ........................ 474 Reports of Meetings:— Midland Institute of Mining, Civil and Mechanical Engineers ................................ 457 North of England Institute of Mining and Mechanical Engineers ...................... 463 Miscellanea :— Partnerships Dissolved—Firemen’s Grievances ... 456 Hull Coal Exports .......................... 476 ADVERTISEMENTS. 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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. PORING ?ob J^INERALS. SPEED AND CERTAINTY. CYLINDRICAL “ CORES.” THE AQUEOUS WORKS AND DIAE^D 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. 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. C.) CAMBRIAN MINING SCHOOL, PORTH, Clam. LOMMTIVW For Sale or IHEis’e. ALWAYS IN STOCK. QUICK DESPATCH. THO? W. WARD Ltd., Sheffield. Telegrams—"Forward.” Telephones—4321 (6 lines). Tin O IT W & *8 con epresentative required with good KJ engineering knowledge and calling regularly on collieries, to obtain enquiries for screening plants, headgears. &c.: district Nottinghamshire and Derbyshire.—Apply by letter to NORTONS (TI VID ALE) LTD., Tipton. Wanted, Air Compressor for about 450 cubic feet capacity.—State how driven, steam and air pressure, condition, price, Box 5583, Colliery Guardian Office, 30 & 31, Furnival- street, Holborn, London, E.C. THE STANDARD WORK ON Mechanical Engineering of Collieries. By . OSBECK & COMPANY LIMITED, PIT-TIMBER MERCHANTS, NEWCASTLE-ON-TYNE. SUPPLY ALL KINDS OF COLLIERY TIMBER. Telbgbams—" OsBiaoxs, Newoastle-on-Tyne." %* For other Miscellaneous Advertisements see Last Whits Page. AND Journal of the Coal and Iron Trades. Joint Editors— J. V. ELSDEN, D.Sc. (Lond.), F.G.S. HUBERT GREENWELL, F.S.S. LONDON, FRIDAY, FEBRUARY 27, 1914. The Home Office has issued a useful list of Parliamentary and official publications relating to mines and quarries revised up to February 1, 1914. It may be obtained gratis on payment of postage (U). The London coal trade still remains very dull and depressed. Merchants are buying very little except at special prices, and the daily contract consignments are with difficulty dealt with. Every quality of household fuel is abundant just now, and supplies are far beyond the demand. Considerable under- selling has taken place both with the merchants in certain districts and particularly by the colliery representatives. Slacks and small nuts are quoted lower. Seaborne prices remain unchanged. The prompt markets on the Tyne and Wear are again very quiet. The demand in Lancashire has been restricted during the past week, but a steadiness prevails throughout Yorkshire and, to a greater extent, Derbyshire. Business at Cardiff has been somewhat irregular. The Scottish market has become slightly easier. Dr. E. Shufflebotham, Milroy lecturer to the Royal College of Physicians, began a course of lectures before the members, on the 19th inst., on “The Hygienic Aspect of the Coalmining Industry of the United Kingdom.” The lectures were continued on Monday and Wednesday last. A meeting of the Midland Institute of Mining, Civil and Mechanical Engineers was held on Saturday. Mr. Bobert Clive read a paper on “ Stonedusting at the Bentley Colliery.” A serious subsidence has occurred in the principal street in Cradley Heath, Staffordshire, under which mining operations are carried on. An enquiry was opened by Lord Mersey at Caxton Hall on Tuesday, and continued on Wednesday, on behalf of the Home Office, with regard to the regula- tions concerning rescue appliances in coalmines. Objections to the regulations had been lodged by the Mining Association of Great Britain and the North of England United Coal Trade Association. On the second day it was announced that an arrangement as to staffs had been arrived at. The enquiry was adjourned until March 25. Prof. Louis, on Wednesday, at Newcastle, before the Newcastle Economic Society, lectured on “Nationalisation of Mines and Minerals.” The first debenture holders of the Duffryn- Bhondda Colliery Company have approved the scheme submitted for the sale of the colliery to the Imperial Navigation Colliery Company Limited for a sum not exceeding £85,000.