552 THE COLLIERY GUARDIAN September 13, 1918. CONTENTS. Editorial Articles:— Page Mine Rescue Apparatus ....................t 553 The Training of Mining Geologists ......... 553 Articles :— The Valuation of Ore Reserves ............. 545 Analysis of Coal, Coke and By-products .... 547 New Commandeering Order for Fuel Overseers ... 548 Mine Rescue Apparatus Research Committee: First Report .......................... 548 Firing Wet Holes .......................... 550 South Wales Mining Timber Trade ........... 554 Use of Coal in Pulverised Form............. 557 Japanese Coal and Coke Question ........... 558 The German Coal and Iron Trades............ 558 Simple Face Conveyor ...................... 559 Weights of Various Coals .................. 559 Labour and Wages .......................... 559 Mean Magnetic Declination.................. 560 The American Coal Trade ................... 560 Open Contracts ........................... 562 Publications Received ..................... 562 The Freight Market .........................562 Abstracts of Patent Specifications Recently Acptd. 564 New Patents Connected with the Coal and Iron Trades .................................. 564 Reports of Meetings:— Institution of Mining Engineers ........... 546 The Coal and Iron Trades .................. 554—557 The London Coal Trade ..................... 556 The By-Products Trade ..................... 557 The Tin-plate Trade........................ 557 Current Science and Technology ................ 551 Indian and Colonial Notes ..................... 551 Notes from the Coal Fields..................... 560 Coal, Iron and Engineering Companies........... 562 Miscellanea :— Irish Mining Work........................ 548 Yorkshire Miners* Association ............. 550 Calling-up Notices Cancelled—Midland Counties Institution of Engineers—Wigan Mining and Technical College ..................... 551 American Appeal to Miners—Whitley Councils and Trade Unions ......................... 556 Iron and Steel Trade Campaign—Coal Beds in the Far North—Proposed Coal Merchants* Federation ............................... 557 Fuel Rationing—Fuel for Canada............. 560 South African Coal Output—Greek Commercial Delegates in England .................... 562 Monthly Coal Output—Miners* Federation and Coal Control—Railways and the Coal Shortage 564 ADVERTISEMENTS. Offices for ADVERTISEMENTS and PUBLICATION; 30 and 31, Furnival Street, Holborn, London, E.C. 4. Telegraphic Address—“Colliery Guardian, Fleet, London.” Telephone—1354 Holborn. CONTRACT ADVERTISEMENTS : Prices for SPECIAL POSITIONS on application. Pricks for ORDINARY POSITIONS Single Column (3 inches wide) : For 52 insertions 3s. 9d. per insertion for each „ 26 „ 4s. 6d. > r , .. „ 13 ” 5s. 3d. ) lnch ln deP‘h- Double Column (6 inches wide), double the above rates. Three Columns (9 inches wide), three times the above rates. SUBSCRIPTIONS. The Colliery Guardian, published at 2.30 £.m. on Friday, can be supplied direct from the Publishing Offices, post free for twelve months, at the following rates :— United Kingdom .... 28/6 (26/- in advance). Canada .......... 30/6 (27/6 do. ). Foreign and Colonial ... 33/- (30/- do. ). When foreign subscriptions are sent by Money Orders, payable through the Post Office, advice should be sent to the Publishers. Offices for Advertisements and Publication :—30 and 31, Furnival-street, Holborn, London, E.C. 4. Telegrams—“ Colliery Guardian, Fleet, London.” Telephone—1354 Holborn. Established 1866. PATENTS, DESIGNS, and TRADE MARKS. □TARRIS AND MILLS, Chartered Patent Agents, 34 and 35, HIGH HOLBORN, LONDON, W.C. 1. Telegraphic Address—“ Privilege, London.” Tel. No.—Holborn 2763. "PATENTS. Advice Free. Ho!U»°6io9. 1 New Inventions, Designs, Trade Marks, carefully and promptly protected at low INCLUSIVE FEES. THE CONSULTING PATENT AGENCY (1880), 253, Gray’s Inn Hoad, London, W.C. 1. AID DID Efi JOHN BAKER & SON, U in lire IRON AND STEEL WORKERS, • »■■■ ■ || Thompson St., BILSTON TUB CORNER PLATES BUCKETS ano BASKETS The Colliery Ready Reckoner and Wages CALCULATOR. By JAMES IRELAND. “Will be the means of preventing many disputes between pay clerks and colliers.”—Mining Journal. Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. Cloth limp, Is. 6d.; post free, Is. 8d. VENTILATING FANS AND ENGINES. See Advertisement appearing on front Cover of alternate weeks. THE WADDLE PATENT FAN AND ENGINEERING CO. LTD., Llanmore Works, Llanelly. UCVP I7TI1AT 1? Q for minerals, ll lh lLV71jrjl0 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. “CROWN” BOILER COVERINGS of Outstanding Superiority. 967. SAYING Intensest Heat cannot Impair. SUTCLIFFE BROS. UZN ST' ARMYTAGE & JONES Ltd., SHEAF STREET, SHEFFIELD. RAILS. WAGONS. (For all purposes). (Coal & Ballast). Boiler Tanks. Points and Crossings. CRANES. (Loco & Derrick). Sleepers. Buffer Stops. Buyers of all kinds Steel and Iron Scrap. Electrical Machinery See Illustrated Advt. PEEBLES in last week’s issue. BRUCE PEEBLES & Co. Ltd. Engineers. EDINBURGH. A MEETING will be held on MONDAY, SEPTEMBER 23rd, 1918, at 3 o’clock p.m., in the GREAT HALL of the CANNON STREET HOTEL, LONDON, E.C. 4, To consider a proposal to form a Federation of the distributing COAL MERCHANTS OF GREAT BRITAIN. It is hoped that all Coal Merchants’ Associations will be repre- sented, and that all Coal Merchants interested will attend. GEORGE GENTRY, Hon. Secretary, Society of Coal Merchants, London. JOHN HALL, Secretary, Bletchley and District Coal Merchants’ Association. All correspondence to Mr. GEORGE GENTRY, 8, Coal Exchange, London, E.C. 3. MINES REPORT, 1917 !!! WE regret a large number of profit- and coal-wasting CAGE SMASHES in districts where the competency and profitable nature of the HANLEY CAGE ARRESTERS is fully acknowledged. WE would ask shareholders to remember that it is unnecessary for their profits to be thrown to the sump, besides LOSS OF COAL. In some districts the use of cage guards has been fashion- able since 1870, so that new users need not lack precedent. WE cannot go on for ever * desiring safety,* and at the same time omitting to use things necessary for preventing injury. This is 1918 instead of 1819.*5* Hum Office, Wakehall. Details : A. HANLEY, Thirlmere, Sheffield. D. Llewellin Evans PROPRIETOR OF THE Cardiff Brattice Cloth Company, 120, BUTE ST. CARDIFF. AGENT FOR Hotel's Explosives. WRAGG « BIGGIN L" ;! Constructional Engineers, <: 50, Effingham Road, Sheffield, I; MANUFACTURERS OF ![ English Steel Joists, Rlvetted ;! Girders, Flitch Plates, Angles, '■ Tees, Channels, Constructional ]■ Steelwork, &c., ;> SOLICIT YOUR ENQUIRIES. J i We hold a LARGE STOCK of all Sections for prompt delivery. i J Telegrams— Telephone— i J “ Girders, Sheffield.” 3873 Central. Geo. N. Dixon Co., 43, Castle Street, Liverpool, Auctioneers and Valuers, COLLIERIES, Brickworks & Mining Plant. “CONIRITE” JOINTINGS, SHEETINGS t PACKINGS, &c. The BEST for Steam, Hydraulic, and Highest Pressures. UfiQE1 Delivery, Suction (Plain or Armoured), nvvfc. Seamless Woven Canvas. VALVES & WASHERS, &c. BALATA BELTING. ASBESTOS GOODS of all descriptions. Prompt Attention. Deliveries FROM STOCK. ------ Direct Service per G.W. Ry. - ALEX." COMRIE S SONS 23/27, Bridge St., SOUTHAMPTON. Tel. Add.—“ Comrite, Southampton.” Tel. No.—1695 Southampton. Late Assistant General Manager Ackers, Whitley & Co. Ltd., Bickershaw Collieries, Lancs., Eng. FRANCIS GLOVER, JMAVxVG ENGINEER, Princeton Coal and Band Co. Iitd., PRINCETON, B.C., CANADA. Successful Coal Mining. Reports. Advice on Canadian Mining ReportBooks Prescribed by the 1 Fl Coal Mines and rorms . * for Use in and about Coal Mines, ABE ALWAYS IN STOCK AND CAN BE SUPPLIED AT OFFICIAL PRICES ON THE SAME DAY AS ORDER RECEIVED. ------ List sent Post Free on application to — THE COLLIERY GUARDIAN CO. LTD., 30 & 31, Furnival Street, Holborn, London, E.C. 4. Wanted, for the Fife Mining School, Cowdenbeath, the full time Services of a FIRST ASSISTANT qualified in Mining and in Electrical Engineering. Ineligible for Army. Salary to commence at £250 per annum, and to rise in annual increments of £10 per annum to a maximum of £300. Applications, stating qualifications and giving testimonials and references, to be sent to— Mr. JOSEPH PARKER, B.Sc., Principal, Fife Mining School, Cowdenbeath. ’ Wanted, a Position as Surveyor to a large Colliery by a mine surveyor with considerable experience in mine surveying, at present acting as surveyor and assistant to manager.— Box 7156, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. Wanted, for Colliery in the Midlands, an ASSISTANT ENGINEWRIGHT; good knowledge and experience of electrical plant essential.—Apply, stating age, experience, and salary required, to AGENT and. MANAGER, Box 7157, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. Young Mining Engineer (Graduate) REQUIRED for general mechanical drawing office work (not surveying and mine plan making). Ineligible for military service. Salary £250, with prospects.—Box 7155, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. Wanted, Colliery Underground Surveyor, certified. State salary, also give age and references.—Apply, Box 7144, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. Experienced Draughtsman Required by large South Wales Colliery Company, with knowledge of coal washery construction preferred. Salary, £300 per annum.—Apply, with full particulars, to Box 7151, Colliery Guardian Office, 30 & 31, Furnival-street Holborn, London, E.C. 4. ’ Surveyor (Certificated) Desires Change. Fully experienced in surface and underground surveying in several districts. State if permanent, and salary.—Box 7148, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. rattice Cloth. — Gentleman Wanted with influence amongst colliery managers and proprietors, to sell BRATTICE CLOTH on good commission only.—Address, FAIRCIiOUGH & SONS, Bank-lane, Clayton, near Manchester. Engineer and Draughtsman Prepares DRAWINGS and ESTIMATES for Colliery Plant, Elevators, Con- veyors, Headgears, Ropeways, Steel and Ferro - concrete Buildings. — Box 7130, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. p>O OOO Colliery going Concern, good output, for SALE. Also £4,000 ' Royalties of UMBERS, OCHRES, BARYTES, LIME, &c.— Apply, Box 7158, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. 4. T?or Sale, 60 8-ton Main Line Coke 11 WAGONS. Inspection by appointment. McLACHLAN & CO. LTD., Darlington.