902 THE COLLIERY GUARDIAN. May 12, 1916. CONTENTS. Editorial Articles:— page Output of Coal............................. 903 The Shipping Problem ................... 904 Articles:— Power from Coke Oven Gas ............... 895 Coal Production Conference ................ 897 Coal Washing Plant at Manor-Powis Colliery, Stirling ................................ 897 Notes on Maritime Coaling Stations ....... 897 Engineering and Scientific Research........ 898 Ferro-Concrete Bunkers at Brymbo Works.... 899 Explosives in Coal Mines..................... 900 The Nation^ Coal Supply .................... 901 Trade Regulations Abroad ................... 904 Micro-Chemical Examination of Coal in Relation to its Utilisation...........*............ 909 Kerogen and Kerogen Shales................. 909 Humidity and its Measurement ............... 910 Mining Industry and Military Service ........ 910 Trade and the War ......................... 910 Labour and Wages....................... 911 Obituary ................................... 913 Exports of Coal, Coke, and Manufactured Fuel from the United Kingdom ................ 914 Open Contracts ........................... 914 The Freight Market .......................... 915 Abstracts of Patent Specifications Recently Accepted............................... 916 New Patents Connected with the Coal and Iron Trades.......................*............. 918 Government Publications ..................... 918 Publications Received ..................... 918 Law Intelligence ........................... 911 Current Science and Technology................ 900 Indian and Colonial Notes ................. 911 Notes from the Coal Fields ................... 912 Goal, Iron and Engineering Companies .......... 915 The Coal and Iron Trades................... 905—908 The Tin-plate Trade .................... 904 The London Coal Trade ....................... 908 The By-Products Trade ...................... 908 Reports of Meetings :— Midland Counties Institution of Engineers... 896 Manchester Geological and Mining Society.... 901 Miscellanea:— North Staffordshire Colliery Managers* Association 898 Hull Coal Exports—Japanese Coal Trade........ 899 Exports and Imports of Mining Machinery..... 90U Income Taxfor Wage-Earners—Prohibited Exports 901 American Coal Cargoes........................ 904 English Miners* Wages...................... 908 Imports of Pit Props......................... 907 Grimsby Coal Exports—Hull Coal Imports...... 913 Coal in Egypt—The Coal Trade Benevolent Asso- ciation.,................................ 915 Coal in Iceland—Research and the Steel Trade— Italy and Coal Freights ................. 918 ADVERTISEMENTS. Offices for ADVERTISEMENTS and PUBLICATION- 30 & 31, Furnival Street, Holborn, 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. 6d. "1 per insertion for each ,, 26 ,, 3s. Od. > r ” 13 3s. 6d. ) lnch ln 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 920). 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. Expert Advice on all questions arising out of INCOME TAX, “EXCESS” PROFITS TAX, RELIEF to “CONTROLLED” ESTABLISHMENTS, LOCAL RATES, etc. THE MANUFACTURERS’ ASSOCIATION LTD., 110, Cannon-street, London, E.C. VENTILATING FANS AND ENGINES. See Advertisement appearing on front Cov^r of alternate weeks. THE WADDLE PATENT FAN AND ENGINEERING CO. LTD., Llanmore Works Llanelly VIVIANS BORING COMPANY akOMyBSMilesof Borings Completed WORK GUARANTEED. jSP BORING for MINERALS, &c Solid Specimens of the Strata obtained. Established 1888. Work guaranteed. J. S. DAVIDSON & SON, St. Bees, CUMBERLAND. AUCTIONEERS and VALUERS TO THE ENGINEERING TRADES. KNIGHT & PARTNERS 31, Old Queen Street, Westminster, S.W. SALES conducted in all parts of the Kingdom. "CROWN” BOILER COVERINGS of Outstanding Superiority. 96°/„ SAYING Intensest Heat cannot Impair. / SUTCLIFFE BROS. NR. MANCHESTER. ’ STEEL Rails Roof Bars Pit Props Arches For COLLIERIES ‘ and WORKS. THOS W. WARD Ltd., Albion Works, SHEFFIELD. TRY US, —- 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. rPhe Proprietor of British Patent No. JL 13084-12, dated June 4, 1912, relating to " Improvement in Briquet Machines,” is desirous of entering into arrangements by way of a license or otherwise on reasonable terms for the purpose of exploiting the above patent and ensuring its practical working in Great Britain.—All enquiries to be addressed to Messrs. HERON ROGBRS & DEHN, Broad Sanctuary Chambers, Westminster, London, S.W. 1 APPOINTMENT REQUIRED. As Enginewright or Foreman by one fullv competent with all kinds of mining machinery; now at liberty. —Box 6378, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. A dvertiser, 49, seeks an Appointment as AGENT and MANAGER of colliery producing low grade non- caking fuel for preference; commercial and practical experience, as also professional credentials of the highest character; none but first-class firms considered.—Apply, Box 6397, Colliery Guardian Office, 30 & 31, Furnival- street, Holborn, London, E.C. VAT anted, thoroughly competent Manager V y for a steam coal colliery in Monmouthshire, with an output of about 1,200 tons per day.—Apply to Box 6398, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. AATanted, a Colliery Enginewright for a V Y new colliery; preference will be given to a man who has a good following of men.—Apply, stating experience, age. and wages required, to Box 6401, CAliery Guardian Office, 30 & 31, Farnival-street, Holborn, London, E.C. Experienced Colliery Manager desires change; good reasons for leaving; highest references; educated and practical; sinking a speciality; Yorkshire preferred.— Address, Box 6405, Cclliertf Guardian Office, 30 & 31, Furnival-street. Holborn, London, E.C. AATanted, a Steel Lattice Headgear V V about 63 ft. high, centres of pulleys 4 ft. 3 in., with room for widening out to 5 ft. in the future, diameter of pulley about 18 ft.—Send particulars to Box 6396,. Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. For Sale, 50 Wood Pit Tubs, 3 ft. 4 in. long by 2ft. 9in. by 24in. deep, iron bottoms flanged up 2in. all round, wheels 22 in. gauge, complete with draw bar and hooks.—Box 6399, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. Qeo. N Dixon <£ Co., 43, Castle Street, Liverpool, Auctioneers and Valuers, COLLIERIES, Brickworks & Mining Plant. THE SHREWSBURY GAS LIGHT COMPANY. TENDERS FOR COAL. The Directors of the Shrewsbury Gas Light Company invite TENDERS for the supply of about20,000 tons of SCREENED GAS COALS, to be delivered free at the Great Western or London and North Western Goods Y*rd, Shrewsbury, during the year commencing July 1st, 1916, and ending June 30ph, 1917. The Directors reserve to themselves the right to divide the quantity into two or more contracts, and do not bind themselves to accept the lowest or anv tender. Tenders must be made on forms (containing further particulars) which may be obtained oh application at the Company’s Works, or by post, and musi be sent to the undersigned, on or before the 26th day of May, 1916. Gas Works. By order, Shrewsbury, WM. BELTON, A.M.I.C.E., 28th April, 1916. Engineer and Secretary. ARMY CONTRACTS. COAL AND COKE. Sealed Tenders for the above supplies for Military Services at Stations in the undermentioned Commands during a period of one year from 1st July, 1916, will be received until 12 o’clock noon on Wednesday, 24th May, 1916, by the Officers Commanding, Army Service Corps, in the undermentioned Commands or districts. Aidershot Command ................... Aidershot. Eastern Command— Dover Garrison............................ Dover. Colchester district ................. Colchester. Chatham „ .................... Chatham. Woolwich ,, ... .... ........... Woolwich Canterbury „ Canterbury. Harwich „ ..... .............. Harwich. Brighton ,, ... ................ Brighton. Bedford ,, ........ ........... Bedford. Irish Command— 1 Curragh district....... ......... ....... The Curragh. Queenstown „ Queenstown. Belfast „ ........................ ... Belfast. Dublin ,, ......... ........ ....... Dublin. Fermoy „ .......................... Fermoy. Lough Swilly Defences ... ........... ... Buncrana. Athlone district ......................... Athlone. London district .......; ........................ Horse Guards, S.W. Northern Command ... ....................... ... York. Scottish Command ... ............................ Edinburgh. Southern Command— Salisbury Plain district ................. Bulford. Portsmouth Garrison...... ... .... ... ... Portsmouth. Plymouth Garrison ....... ................ Devonport. S uthampton district.,. ................. Southampton. Wylye Valley ,, ..... ................ Warminster. Fovant „ ............ ......... Fovant. Larkhill ,, .., .... ... ......... Larkhill. Western Command..; ... ................... ... Chester. Jersey district..... ;.. ... ... ................ Jersey. Form of tender, conditions of contract, and any further information may be obtained on a .plication at the above named Headquarters Offices, by letter addressed to the OFFICER COMMANDING, Army Service Corps, or in person, between the hours of ten and four o’clock. War Office. SW., May. 1916. TO COLLIERY OWNERS AND COAL AND COKE MERCHANTS. The Tottenham District Council invite TENDERS for the supply of COAL and GAS COKE for three, six, and twelve months. Forms of tender can be obtained on application to Mr. J. Lambert, the Acting Engineer to the Council. Scaled tenders (endorsed " Co il Contract”) or (“ Coke Contract,”) as the case may be, must be delivered to me by twelve o’clock noon, on Tuesday, the twenty-third day of May, 1916. Town Hall, REGINALD C. GRAVES, Tottenham. Clerk of the Council. TO COAL MERCHANTS. rphe Managers of the North Surrey JL District School, Anerley. desire to enter into a contract for the supply of STEAM COAL to that Institution from the 1st July next. Persons willing to do so are requested to state for what descriptions of steam coal at what price, and for what period they will be prepared to contract. This quotation, endorsed “ Steam Coal,” should be addressed to the Managers, North Surrey District S'hool, Anerley, S.E., and reach there not later than Saturday, 2(kh inst. It will be opened a”d considered by the Managers on the 22nd inst. H. J. CHALDECOTT, 9th May, 1916. Clerk to the Managers. ADMINISTRATIVE COUNTY OF LONDON. The London County Council invites TENDERS for the supply and delivery as from 1st July, 1916, of COAL of various descriptions for Offices, Schools, Fire stations, Tramway Depots, Parks,&c. (Schedule No. 88). Delivery will be required at intervals during the continuance of the contracts. Official forms of tender may be obtained on personal application or by sending a stamped addressed foolscap envelope to the Chief Officer of Stores, L.C.C. Stores, No. 30, Clerkenwell close, E.C. 'No tender received at the County Hall after 1 p.m. on Tuesday, 30th May, 1916, will be considered County Hall, Spring gardens, S.W., JAMES BIRD, 9th May, 1916. Clerk of the London County "Council. LONDON COUNTY COUNCIL. CONTRACTS FOR SUPPLY OF COAL. The Asylums and Mental Deficiency Committee of the London County Council invite TENDERS from Colliery Proprietors (or their accredited sole agents) for the supply and delivery at the railway stations nearest to the London County. Asylums, of HOUSE, STEAM and GAS COALS between 15th June, 1916, and 30&h June, 1917. The approximate quantities required are House coal ...... 5,600 tons. Steam ......... 21 000 ,, Gas „ ...... 2 200 „ For the supply of GAS COAL to Hanwell Asylum tenders also invited (alternatively) tor delivery by barge at the Asylum Dock (Grand Junction Canal), including unloading into the stores. Forms ot tender and other particulars can be obtained at the address stated below, where tenders must be delivered not later than eleven a.m. on Tuesday, 23rd May, 1916. No tender received after that time will be considered. H. F. KEENE, 2, Savoy-hill, W.C. Clerk to the Asylums and Mental Deficiency Committee. BOROUGH OF ABERGAVENNY. Tenders are invited for the supply of about 3,000 tons of SCREENED GAS COAL, Through-and-Through as worked, NUTS or SLACK, for delivery during 12 months ended June 30th. 1917, delivered at the Gas Works Siding, Abergavenny. Tenders endorsed ” Gas Coal,” to be addressed to the undersigned and sent in by the 18th May, 1916. Particulars and forms of tender may be obtained from the Gas Manager. The Committee may accept any tender as regards any one or more of the items included therein, or any part thereof, and do not bind themselves to accept any of the tenders in whole or in part. Town Hall, Abergavenny, WM. H. HOPWOOD. 12th May, 1916. Town Clerk. AATanted, Travelling Steam Crane, V V 4 ft. 8^ in. gauge, fitted with jib 30 to 40 ft. long; must be in first- class condition.—Apply, with full particulars, to MAIN COLLIERY CO. LTD., Neath Abbey, Glam. Wanted, Lancashire Boilers, about 30ft. long by 7 to 8 ft. diameter.—State particulars and price, COATES, Fenay Bridge, Huddersfield. SLEEPERS Q OOO Second-hand Railway Sleepers, 9V-/ X_z suitable for cart road, for sale. — Apply, J. J. DENTITH, Midland Yard, Chesterfield. Pitwood.—About 400 tons Larch and Scotch for sale.-JOHN KERBUISH & SON, 21, Athol-street, Douglas, Man.