1123 _____ June 16, 1916. THE COLLIERY GUARDIAN. SHAFT INSPECTION LAMP. “ PEARSON” SPECIALITIES. __ ____________ 6 Volt. 50 Candle Power. Weight 21 lb. UNSPILLABLE ACCUMULATORS. Telegrams-" PELECTLYTO, BOCHURCH, LONDON.” Telephone—119 STRATFORD. ____ NEW TYPE VALVES (Patent applied for). No Acid Leakage. ____ ir w •'liillllilll: •illllb JlllMWIIIi .iHUIIlilb Wllilir It MINERS’ gLECTRIC LAMP. Weight under 4ilb. Burning hours 16. Time taken for changing bulb, 5 seconds. Cheapest in Upkeep. British Productions entirely both as to Capital _____________ Pearson’s Electric Miners’ Lamp Co. Ltd., VICTORIA WORKS, Marshgate Lane, Stratford, LONDON, E. and Labour. C. A. FORSLIND & SON, Pit Props and Mining Timber Importers, Fountain Terrace, West Hartlepool. Telegrams: “ Forslind, West Hartlepool.” Telephone: No. III. xSxCttjixi 1 O A KFj.I > turned SHAFTING Tons in stock BOO’ in normal times. 7 to S'Djduneterftutep^tfts upto 30ft. NEW CATALOGUE WITH DETAILS 4 PRICES FREE Heary Crowther & Sons.Ztd. ClECKHEATOR, YORKSHME. HAMMERED GAST IRON Premier Works, PISTON RINGS Don Road, SHEFFIELD (by the Davy-Robertson Process). All sizes from 2£in. to 72 in. In our Special Piston Ring Iron. THE STANDARD PISTON RING & ENGINEERING CO. LTD., QUICK DELIVERY. LOW PRICES. -oSSSKu.- STAN LEY “ The Largest Manufacturers of SURVEYING and DRAWING INSTRUMENTS in the World. WINDING & HAULING ENGINES up to the largest sizes. STEAM and ELECTRICALLY DRIVEN. _______________________ Theodolites, Levels, Mining Dials, Prismatic Compasses, Tapes, Rods, Staves, Drawing Instruments, and Drawing Office Stationery. ______________________ Please send for our “ K. 12” Cata- logue, and compare our prices with those of other first-class makers. ___________________________ Worsley Mesnes Ironworks Ld., WIGAN. ____________________ Stanley-Boucher Pocket Calculators. _________________________ AIR-COMPRESSING ENGINES AND PUMPS. _______ BREAKDOWN REPAIRS A SPECIALITY. _______ Telegrams—“ ENGINES. WIGAN.” Telephone—No 46 WIGAN. W. F. STANLEY & CO. LTD., Head Offices and Showrooms:— 286, HIGH HOLBORN, LONDON, W.C. _______________________________________________________________________________ Stone’s “Alligator” Flexible Steel Belt Lacing. \ Nothing needed but a Hammer. “Spade” Washers “CRQWN” COVERINGS For the Scottish Tube Company’s Tubes, and others. JOHN E. KEIRBY & SONS L" SWINTON, near MANCHESTER. Telegrams—“ Keirby,” Swinton, Manchester. Established 1864. for Boilers, Piping, Superheaters, &c. 96 SAVING (The word “SPADE” is a Registered Trade Mark.) in Radiation, Greatest Economy, Longest Service. J. B. STONE & CO. LTD., 13 5, Finsbury Pavement, London, E.C. Send me free a sample of “Alligator” Belt Lacing, which. I agree to test in my factory. Width of Belt .......... Thickness ............ Name ........................................ Address ............................................................ ________________________________________________________ “THE SOUTH WALES COAL-FIELD.”—PART III. By HENRY K. JORDAN. F.G.S. (Past President and First Gold Medallist of the South Wales Institute of Engineers'. rpHIS Paper completes the author’s monograph on the South Wales J- Coal-Field, and is published by the South Wales Institute of Enginers. It comprises 89 pages of printed matter, with a number of Sections inter- leaved, and the following large drawings which are issued separately:— 1. A Horizontal Section across the Carmarthenshire Coal-Field, from Pontyberem to the Sea near Llanelly. 1 he Section is fiv-* feet in length, mounted on linen, and geologically coloured. 2 A Map on the Six-inch Scale of the Anthracite Area of Llan- non, Mynydd-Sylen, and Pontyberem. It also illustrates the Outer- ps of the Seams, Faults, &c. Three Sheets of Vertical Sections of the Deep and Important New Collieries that have been hunk throughout the Coal- Field during the Past Six Years. The sections are drawn to i «ca'“ of 100 ft. to 1 in., and the sheets are 40 x 27 in., mount on linen. . The first portion of the text deals with the anthracite area and with the I Pennant seams to the north and west of Llanelly and Burry Port. The remaining portion discusses the new collieries in Glamorganshire and Monmouthshire, with much additional information which brings the subject up to date. A limited number of the above are for sale, price £ 2 2s. (postage extra), and may be obtained from THE SECRETARY, The South Wales Institute of Engineers, Cardiff. “The South Wales Coal-Field,” Part I., by Mr. H. K. Jorban, price £2 2s., dealing with’he eastern half of the Coal-Field; and “The South Wales Coal-Field ” Part II.. by Mr. H. K. Jordan, price £1 Is., dealing with the western half of the Coal-Field, maybe obtained from the Secretary Bill Cannot be impaired, however intense the heat. Our TELLURIC CEMENT, unequalled for general purposes. Sole Makers: SUTCLIFFE BROS., Union Works, GODLEY, nr. Manchester.