808 THE COLLIERY GUARDIAN. Avail 18, 1913. COHTENTS. PAGE Editobial Article :— The Influence of Incombustible Dusts on the Inflammation of Gaseous Mixtures............. 809 Articles :— Progress in By-product Recovery at Coke Ovens ... 795 Explosives in Coalmines ..................... 801 The Formation of Coal........................ 802 The Influence of Combustible Dusts on the Inflammation of Gaseous Mixtures........... 811 The Hull Coal Trade.......................... 814 Labour and Wages............................. 815 Survey Marks ................................ 817 Notes from South Wales....................... 817 Mining and Other Notes ...................... 818 Catalogues and Price Lists Received.......... 819 The Freight Market .......................... 820 Open Contracts ............................ 821 Abstracts of Patent Specifications Recently Accepted 821 New Patents Connected with the Coal and Iron Trades..................................... 824 Publications Received ....................... 824 Government Publications ..................... 824 Workmen's Compensation ......................... 813 Law Intelligence ............................... 816 Continental Mining Notes ....................... 816 Coal, Iron and Engineering Companies ........... 820 The Coal and Iron Trades ................ 804—807, 814 The Tin-plate Trade ......................... 812 The London Coal Trade ....................... 813 The By-Products Trade ....................... 814 Reports of Meetings:— North of England Institute of Mining and Mechanical Engineers ...................... 797 Mining Institute of Scotland................. 803 Iron and Steel Institute .................... 803 Mining Association of Great Britain ......... 807 Letters to the Editor :— Pit Ponies and Blinkers — The Rufford Colliery Accident — London Coal Exchange — Proposed New Coasting Charter ...................... 814 Miscellanea :— Early Mining Records in Somerset............. 800 Hull Coal Exports ................«.......... 802 Grimsby Coal Exports—North Staffordshire Coal and Iron Workers' Relief Society ............ 816 South Staffordshire and Warwickshire Institute of Mining Engineers—The Relighting of Safety Lamps ....................................... 817 Lothians Mineworkers’ Ambulance League......... 818 Wireless Telephony in Mines.................. 819 Partnerships • Dissolved — Glamorgan County Council : Summer Mining School in South Wales ..................................... 824 SUBSCRIPTIONS. The Colliery Guardian is published at 2.30 p.m. on Friday, and includes the latest intelligence. The Annual Sub- •cription 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, £1 7s. 6d. ADVERTISEMENTS. ADVERTISEMENT DEPARTMENT. H. Grbvillb 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 ... 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. per insertion for each inch in depth. CONTRACT ADVERTISEMENTS. Prices fob SPECIAL POSITIONS on application. Prices for ORDINARY POSITIONS Single Column (3 inches wide): For 52 insertions 2s. 6d. „ 26 „ 3s. Od. ,, 13 „ 3s. 6d. Double Column (6 inches wide), double the above rates. Three Columns (9 inches wide), three times the above rates. Ditcount* nr Comml**ion* are paid to Auctioneer* and Advertiting Agent*. (A Classified List appears on page 826.) 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. VENTILATING FANS AND ENGINES. Bee Advertisement appearing on front Cover of alternate Weeks. THE WADDLE PATENT FAN AND ENGINEERING CO. LTD. Llanmore Works Llanelly. VIVIANS BORING COMPANY jkOvr 82Miles of Borings Completed J WORK GUARANTEED, Wy rGOYlA«.S BORING for MINERALS, &c. Solid Specimens of the Strata obtained. Established 1888. Reference if required. Jrp„ T0 ---- Work guaranteed. J. S. DAVIDSON & SON, St. Bees, CUMBERLAND. The Cambrian School of Mines, CEMETERY ROAD, PORTH, GLAM. Principal: WILLIAM THOMAS, M.Inst.M.E., M.R., Society of Arts. A SCHOOL of Unequalled Reputation. No Branches. No Agents- -z*- 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. YEADONS’ LATEST PATENTED BRIQUETTE MACHINERY, For Coal, Coke, Iron and other Ores. YEADON, SON & CO., • . • Engineers, LEEDS. 35 Years’ Experience. World-wide Reputation. AND ACCESSORIES. ••• WAGONS ALWAYS IN STOCK. QUICK DESPATCH. THO? W. WARD Ltd., Sheffield. Telegrams—“Forward.” Telephones—4321 (6 lines). The U.M.S. (Estab. 1883). men qualified to . is conducted by T. A. SOUTHERN H. W. HALBAUM (late H.M.I.M.) (Greenwell Medallist) 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. NEW FORMS, &c.. RECENTLY ISSUED UNDER THE COAL MINES ACTS. ---- See Page 834. ---- This List of New Prescribed Forms, 8;c., appears weekly in the “ Colliery Guardian ” A Firm of Brokers and Agents in Trieste desire to represent in Austria a firm of colliery or coal and coke exporters—Address, “ENERGETIC AGENTS,” Box 5190, Colliery Guardian Office, 30 & 31, f urnival street, Holborn, London, E.C. (Colliery Tub Trade.—Financial Assis- TANCE required to form a company by manager of the largest tub works in England.—Box 5195, Colliery Guardian Office, 30 & 51. Furnival- street. Holborn. London, E.C. South Yorkshire Colliery for Sale; total reserves 60 million tons best house and gas coals; particulars to principals only.—Box 5200, Colliery Guardian Office, 30 & 31, Furnival- street, Holborn, London, E.C VYanted, 2 Gillott & Copley Coal Cutters w V on skids, 3ft. 6in. wheel; state lowest price and where can be seen.—Reply, Box 5205, Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. : Lattice Girder Bridge as per illustration, 96 ft. long, 7 ft. by 7 ft. inside, in three lengths, has been across L. & N.W. Railway, FOR SALE.—Apply, LEAMORE BRICK CO., Walsall. TO COLLIERY PROPRIETORS AND OTHERS. rFhe Corporation of Birkenhead are pre- JL pared to receive TENDERS for the supply of SCREENED COAL,. THROUGH AND THROUGH, and COAL NUTS, for gas making purposes, for a period of twelve months, commencing from the 1st July, 1913. Forms of tender, together with any further information, may be obtained from Mr. T. O. Paterson, M.Inst.C.E., Gas Engineer, Gas Works, Birkenhead. Tenders (accompanied by copy of recent analysis) stating the price per ton delivered to the Gas Works railway siding, must be sent in to me. sealed and endorsed “ Tender for Gas Works Coal,” not later than five o’clock in the afternoon of Thursday, 24th April, 1913. All deliveries to be made from time to time according to the requirements of the Engineer. The person or firm whose tender may be accepted will be required to enter into a contract containing a clause as to the payment of the rate of wages, and the observance of the hours of labour recognised and agreed upon between the trades unions and the employers in Birkenhead or in the locality in which the work for carrying out the contract is executed, as the case may be. The Corporation do not bind themselves to accept the lowest or any tender. Town Hall, By order, Birkenhead, JAMES FEARNLEY, 14th April, 1913. Town Clerk. ARMY CONTRACTS. COAL AND COKE. Sealed. Tenders for Military Services, during twelve months, from the 1st July, 1913, will be received until 12 o’clock noon on Wednesday, 14th May, 1913, by the General Officers Commanding the undermentioned districts. Aidershot command............................. Aidershot. Eastern command ... Dover district......... Dover. Colchester district.... Colchester. Eastern Coast Defences Chatham. Woolwich district........ Woolwich. Irish command........ Curravh district ........ Curragh. Cork district ........ Cork. Belfast district. Belfast. Dublin district... Dublin. London district................................ Horse Guards, White- Northern command...................... York. [hall, S.W. Scottish command .............................. Edinburgh. Southern command ... Salisbury Plain district Bulford. Southern Coa^t Defences Portsmouth. South Western Coast Defences .......... Devonport. Western command ............................... Chester. Guernsey and Alderney district................. Guernsey. Jersey d strict ............................... Jersey. Forms of tender and conditions of contract (showing approximate quantities) may be obtained on application at the above-named Head Quarter Offices, by letter addressed to the Officer Commanding. Army Service Corps, or in person between the hours of ten and four o’clock. The tenders must be properly filled up, signed and dated, and no tender will be noticed unless delivered upon the proper form, in time, at the above- named Head Quarter Offices, under sealed envelope marked “Tender” on the outside. War Office, Whitehall, S.W., April, 1913. COUNTY OF LONDON. rPhe London County Council invites JL TENDERS for the supply and delivery from 1st July, 1913, to 30th June, 1914 (a) of COAL of various descriptions for the Pumping Stations, Sludge Vessels, Ferry Boats, &c., in the Chief Engineer’s Department (Schedule No. 87), and (6) of COAL of various descriptions, and COKE for the several Offices, Schools, Fire Stations, Tramway Depots, Parks, &c. (Schedule No. 88), the deliveries to be made at intervals during the con- tinuance of the contracts. Full particulars as to the conditions of contract, &c., appear on the official forms of tender, which may be obtained on personal application or by sending a stamped addressed foolscap envelope to the Clerk of the Council.. County Hall, Spring-gardens, S.W. No tender received after 11 a.m. on Tuesday, 6th May, 1913, will be considered. Applicants are requested to state the number of the schedule which thev require. County Hall. LAURENCE GOMME, Spring gardens, 8.W., Clerk of the London 16th April, 1913. County Council. GLAMORGAN COUNTY COUNCIL. SUMMER MINING SCHOOL OF SOUTH WALES COALFIELD. Short Courses as follows for three weeks during month of August, at University College, Cardiff, and County School, Penarth. 1. SURVEYOR’S COURSE at Penarth. To meet requirements of the Coal Mines Act, 1911. 2. ENGINEER’S COURSE: Mining, Mechanical, and Electrical Engi- neering (Laboratory work), and Practical Mathematics. 3 ARCHITECTS’ and BUILDERS’ COURSES. 4. TEACHERS’ COURSE: Geo ogy (Lectures and Field Work), Physics and Chemistry. This Course has been specially arranged to meet the requirements of Teachers engaged in or preparing for work at Evening Schools or Technical Classes. 5. ELECTRIFICATION OF COLLIERIES. Special Evening Course.. One Hundred Hours’ Instruction will be given in Courses 1, 2, 3, and 4. Penarth. with its beautiful sea frontage, is a delightful place for a Summer holiday. Full particulars, prospectus, and forms of application, from the CHIEF EDUCATION OFFICIAL, County Hall, Cardiff. 10th April, 1913. COUNTY BOROUGH OF SALFORD. GAS DEPARTMENT. rpiie Gas Committee invite offers for the JL. supply of COAL and CANNEL required at their works during the period of one year. Quotation forms may be obtained on application to Mr. William W. Woodward. Engineer, Gas Offices, Bloom street, Salford. Sealed offers endorsed “ Gas Coal.” to be delivered to me not later than 3 p.m. on Thursday, the 1st May, 1913. (Signed) L. C. EVANS, Town Clerk. TTseful for a Colliery. —Two Modern VJ high-class D.C. GENERATING SETS, comprisingtwo High-speed Vertical, Compound, Double-acting Steam Engines, totally enclosed type, improved system of forced lubrication, dead beat governors, steam pressure 120 lb., developing 40 b.h.p. at 650 r.p.m., by James Howden & Co., Glasgow; each mounted on a combination bedplate, with two open type steel clad shunt-wound dynamos, split shell, 210-240 volts, 580 650 r.p.m., output 30 kw., bv Mather & Platt, Salford; neat appearance, very compact, measuring over all, bedplate 5 ft. 6 in. by 2 ft. 10 in.: height 5 ft. 6 in.—Can be seen on appli- cation to MANAGER, Daily Post Office, Liverpool. YXpmted, a Beiliss & Morcom or other ▼ ▼ high-speed ENGIN E of 290/300-b.h.p., w.p. 100 lb. per square inch, 375/400 r.p.m.; must be in first-class condition, and suitable for direct coupling to generator.—Apply, Box 5196, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. Wanted, new or good Second-hand STEAM CYLINDER, with valve motion and cushioning cylinder, complete for post brake for winding engines, steam pressure 45 lb.—Price and general particulars to Box 5193, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. Ipor Sale, almost new “ Beiliss-Silver- town,” 150-kw. Steam Balancer ELECTRIC GENERATING SET, 250 volts. 180lb. steam pressure; to be seen erected.—Box 5198, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. \ Wanted, Colliery Winding Engines, y y from 20 to 50 in. cylinders.—State price and where to be seen. Box 5199, Collier' Guardian Office,30 & 31, Furnival Rt., Holborn, London, E.C. 17 or Sale, 30 ten - ton Spring - buffer WAGONS, built 1898 by Chas. Roberts & Co., good condition.— Apply, Box 5203, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 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, Wednesburt. J. W. BAIRD AND COMPANY PITWOOD IMPORTERS, WEST HARTLEPOOL, YEARLY CONTRACTS ENTERED INTO WITH COLLIERIES.