118 THE COLLIERY GUARDIAN. July 21, 1916. CONTENTS. Editorial Articles :— page The Educational Ladder......................... 119 The Storage of Coal ......................... 119 Articles Coal and Shipping ........................... 109 Structure of the South Staffordshire Coal Field ... 112 Economical Production and Utilisation of Power at Collieries ............................. 114 Trade and the War ........................... 117 Safety Lamp Order ........................... 119 Mining Industry and Military Service ........ 124 Miners and Coal Prices....................... 124 The German Coal and Iron Trades.............. 124 Prospecting for Coal in France............... 124 Mining Employment Statistics................. 125 Labour and Wages............................. 129 Exports of Coal, Coke and Manufactured Fuel in 1914 and. 1915............................. 130 Open Contracts .............................. 131 Obituary .................................... 131 The Freight Market .......................... 131 Abstracts of Patent Specifications Recently Accepted................................... 132 New Patents Connected with the Coal and Iron Trades..................................... 134 Government Publications ..................... 134 Publications Received ....................... 134 Parliamentary Intelligence ...................... 129 Current Science and Technology................... 125 Notes from the Coal Fields ...................... 127 Coal, Iron and Engineering Companies ............ 131 The Coal and Iron Trades......................120—123 The By-Products Trade ....................... 122 The Tin-plate Trade ......................... 123 The London Coal Trade ....................... 124 Reports of Meetings :— South Staffordshire and Warwickshire Institute of Mining Engineers........................ Ill The Midland Institute of Mining, Civil and Mechanical Engineers ...................... 117 Miners’ Federation Conference................ 126 Miscellanea :— Grimsby Coal Exports..................... 112 Immingham Coal Exports—Indian Coal ....... 114 Safety Rules for By-Product Coke Ovens ... 116 Hull Coal Exports ........................ 122 Progress of Chemical Industry............. 124 Heriot-Watt College, Edinburgh............ 130 New By-Product Coke Concern—Coal Shipped from Ports in the United Kingdom during June 131 University of Sheffield—Uruguayan Coal Duty— American Bureau of Mining Economics ..... 134 ADVERTISEMENTS. Offices for ADVERTISEMENTS and PUBLICATION— 30 & 319 Furnival Street, HoBborn, 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. &d. ? insertion for each „ 13 „ 3s. 6d. ) mch m dePt*>- Double Column (6 inches wide), double the above rates. Three Columns (9 inches wide), three times the above rates. (A Classified List appears on page 136.) Established 1866. PATENTS, DESIGNS, and TRADE MARKS. TT ARRIS AND MILLS, Chartered Patent Agents, 34 and 35, HIGH HOLBORN, LONDON, W.C. Telegraphic Address—” Privilege, London.” Tel. No.—Holborn 2763. PATENTS. Advice Free. HToSn6io9. New Inventions, Designs, Trade Marks, carefully and promptly protected at low INCLUSIVE FEES. THE CONSULTING PATENT AGENCY (1880), 253, Gray’s Inn Road, London, W.C. To Colliery Owners requiring temporary representation for period of the war; well known London firm will undertake duties for nominal expenses only.—Box 6372, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn. London, E.C. First-class Certificated Colliery Manager wanted to take charge of North Midland Coal Owners’ Rescue Stations, situate at Mansfield, Chesterfield and Ilkeston; commencing salary £325 per annum; house and small car provided.—Applications, stating particulars, accompanied by references, to be addressed, not later than August 3,1916, to the SECRETARY, Bank-chambers, London-road, Derby. Advertiser, ineligible, desires change; can take entire commercial charge—Bom 6477, Colliery Guardian Office. 30 & 31, Furnival-street, Holborn, London, E.C. YUanted to Purchase, sound Colliery up V V to £500,000.—Address, Box 101, Wheelers Advertising Office, Manchester. For Sale, Transactions of the North of England Institute of Mining and Mechanical Engineers, bound vols. Nos. 11. 21 and 23; complete in parts, vols. 14, 16. 27, 30, 32, 34 and 35.— Particulars or OFFERS to Boz 6473, Cdliery Gwi&itJian Office, 30& 31, Furnival-street, Holborn, London, E.C. VENTILATING FANS AND ENGINES. See Advertisement appearing on front Cover of alternate weeks. THE WADDLE PATENT FAN AND ENGINEERING CO. LTD., Llanmore Works Llanelly 1 T)fAT)17TTfYT T7< Q for minerals, J5VI1JLJIZLV7XjJLJI0 WATER AND BRINE Boreholes for Prospecting in Underground Workings a Speciality. VIVIAN’S BORING COMPANY, PARKSIDE, CLEATOR MOOR. OVER 88 MILES OF BORINGS COMPLETED. Established 44 years. Largest experience. Telegrams—” Vivians, Parkside, Cleator Moor.” BORING for MINERALS, &o. Solid Specimens of the Strata obtained. Established 1888. Work guaranteed. J. S. DAVIDSON & SON, St. Bees, CUMBERLAND. STEEL Rails Roof Rars Pit Props Arches For COLLIERIES and WORKS. THOS W. WARD Ltd., Albion Works, SHEFFIELD. rar us, — MODERN BRASIER jRegd. (OUTSIDE STOVE). Prov. Pat. ADJUSTABLE.—Open or Closed. Large or Small Fire. PORTABLE—Closed 11 in. by 4j in. Weight 6$ lb. INEXPENSIVE. Write: The Lawrence Patent Water Softener, &c., Co. Ltd. PARLIAMENT MANSIONS, WESTMINSTER. “CROWN” BOILER COVERINGS of Outstanding Superiority. 967., SAYING Intensest Heat cannot Impair. SUTCLIFFE BROS. HR. MAHCh’eBTEB. MARITIME COALING ADMINISTRATION Development of Coaling Stations. Parliament Mansions, Victoria Street, Westminster, England. The following Second-hand Plant and MACHINERY FOR SALE at the CWMTILLERY AND ROSE HEYWORTH COLLIERIES, and TENDERS are desired for same, including removal. The Plant, &c., can he seen by appointment.—Apply, LANCASTBB’S STEAM COAL COLLIERIES LTD., Cwmtillery, Mon. 1 LANCASHIRE BOILER, 7ft. 8 in. diamater, 28ft. long, furnace tubes 3ft. diameter, each with 5 cross tubes, insured with the British Engine, Boiler and Electrical Insurance Co. for 80 lb. pressure. 2 old LANCASHIRE BOILERS, 7ft. 3in. diameter by 30 ft. 3 in. long, furnace tubes 2ft. 2in. diameter, lately used as air receivers at 551b. pressure. 1 old LANCASHIRE BOILER. 8 ft. diameter by 30 ft. long, furnace tubes 3ft. 2in. diameter, each with 7 cross tubes; tubes and front end plate withdrawn: fast used for 100 ib. pressure. X old EGG-END BOILER, 4ft. diameter by 37ft. long, lately used as air receiver for 601b. pressure. 1 WROUGHT IRON OCTAGONAL DRUMSHAFT, 11gin. over flats by 13ft 4 in. long, with 2 wrought iron clanks, 2ft. 6in. throw. 1 WROUGHT IRON DRUMSHAFT, 9gin. diameter by 17ft. long, with 2 wrought cranks, 2 ft throw. 1 WROUGHT IRON DRUMSHAFT, login, by 12ft. 6in. long, with 2 wrought iron cranks, 2ft. throw. 1 STEEL CRANKSHAFT, 10in. diameter by 9ft. 8in. long, with swell in centre 11 in. diameter, for flywheel. 1 CAST IRON FLY WHEEL, in halves, secured by bolts and keys 14 ft. diameter, rim 8^ in. wide by 14in. deep, 11 in. bore, 6 arms 3£ in. by 9in., to fit above shaft. 1 HEAVY CAST IRON FLYWHEEL, in halves, secured by bolts, 10 ft. diameter, lljin. face, bore 9g in. 1 WROUGHT IRON CRANK SHAFT, 9g in. diameter, 6 ft. 8 in. long, with 2 ci anks. 18 in. throw. 1 old lOh.p. LOCO. TYPE BOILER. 3 old WATER HEATERS. Boring.—Tenders wanted for Boring underground in a Lancashire colliery, approximate depth 140 yards. —Apply, Box 6475, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. ACTON URBAN DISTRICT COUNCIL. STEAM COAL. Renders are invited for the supply of JL STEAM COAL for the period of six months frem the 1st August, 1916, to the 31st January. 1917, and for the period of twelve months from the 1st August, 1916, to the 31st July, 1917, respectively. Particulars and forms of tender may be obtained upon application to the Surveyor of the Council, and tenders endorsed ” Steam Coal,” must be delivered to me not later than 3 p.m. on Thursday, the 27th July, 1916. The Council do not bind themselves to accept the lowest or any tender, and canvassing the members of the Council, either directly or indirectly, will disqualify. Council Offices, Acton, W., WM. HODSON, 17th July, 1916. Clerk to the Council. PARISH OF SAINT LEONARD, SHOREDITCH. r Uhe Guardians of the Poor of the above- JL named parish are prepared to receive TENDERS for the supply of a specified quantity of COAL for their various Institutions, the whole to be delivered within two months from the 26th July next. Forms of tender and contract containing the total quantities required can be obtained at my office as under, and must be returned endorsed ” Tender for Coal,” not later than 3 p.m. on Wednesday, the 26th July next. Clerk’s Office, By order, 213, Kingsland-road, N.E., ROBERT OLAY, 12th July, 1916. Clerk to the Guardians. F imited Company will shortly be prepared 1 J to CONTRACT for supply of STEAM COAL; minimum require- ments 1OO tons- per month, six or twelve months, f.o.r. Manchester.— Replies to be sent to Box 6474, Colliery Guardian Office, 30 & 31, Furnival- street, Holborn, London, E.C. A Company requires 100 tons 50 lb. RAILS, special sectien ; quotations invited.—ARAUCO CO. LTD., 89, Bishopsgate, London, E.C. U Side-tip Earth Wagons, 4/ cubic yards capacity, in first class condition; price £16 each net on rail. -FRANK MUNN, Dumballs-road, Cardiff. YV anted, set of Drums and Gears for ▼ V main and tail rope haulage, drums about 3ft. diameter, and to hold 1,500 yards of Bin. rope, motor speed 725 revs., rope speed required 3 miles per hour. — Price and full particulars to the GENERAL MANAGER, Camerton Collieries, near Bath. Geo. N. Dixon & Co., 43, Castle Street, Liverpool, Auctioneers and Valuers, COLLIERIES, Brickworks & Mining Plant. Auctioneers & Valuers to the Engineering Trades. KNIGHT &. PARTNERS Ltd. 27, Old Queen Street, Westminster, S.W. CORRESPONDENCE INVITED. SALES conducted in all parts of the Kingdom. COAL, IRON & STEEL SHARES. WILLIAM CHAPMAN & COMPANY, * Stockbrokers. (established since 1851). Cavendish Buildings, Wheeler Cate, NOTTINGHAM. Special Business in Coal, Iron and Steel Shares. Lists, reports, &c., will be forwarded, regularly on application. For Sale, second - hand “ Tangye’s ” HORIZONTAL STEAM ENGINE, 10 to 20 h.p., in good condition. —Apply J. SALOMON A CO., Rothsay-street, Bermondsey, London, S.E. VVTanted, 2 second-hand Boilers, about V V 30 by 8. to stand a pressure of not more than 5 lb. to the square inch.—Price and particulars to Box 6466, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. For Sale, 300-kw. British Westinghouse TURBO-ALTERNATOR, 3-phase, 500 volts, 50 cycles, 346 amps., with Condensing Plant complete; practically new condition; a bargain.— Apply, Box 6470, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. VAT anted immediately, 50/100 10- or 12- ▼ ▼ ton full-sized new specification COAL WAGONS, modern build, fitted with side and end doors ; full particulars, including net cash price ; delivery South Yorkshire colliery.—THE BRITISH WAGON CO. LTD., Rotherham. \ A/an ted, Self-contained Semi-portable y ▼ ENGINE AND BOILER, cylinders about 16 in. diameter, drum about 6 ft., for sinking purposes ; Robey or other good make preferred.— Box 6467, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. VA/anted, Pulley Frames, about 50 ft. V V high, pullevs 8 to 12 ft. diameter, to carry 8 tons.—Box 6468, Colliery Guar at an Office, 30 & 31, Furnival-street, Holborn, London, E.C. VXTanted, 500/600 yards of 18 in. to 24 in. V V diameter VENTILATION PIPES, suitable for suspending in a sinking pit.—Apply, Box 6462, Colliery Guardian Office, 30 A 31, Furnival- street, Holborn, Loudon, E.C. For Sale, two 5-ton Steam Derrick CRANES, with 65