1234 THE COLLIERY GUARDIAN. .Tune 5, 1914. w Prevent Colliery Explosions! It is far cheaper to provide means of preventing explosions than to suffer the enormous loss they cause. Stone Dusting minimises the danger. Stone Dust is easily and cheaply made if you have one of Alien’s Special Stone Dust Making Plants. They are simple, strong and self-contained. They have many advantages over other types of machines. If yon do not yet know about them, write at once for details ! Edgar Allen & Co. Limited, Imperial Steel Works, SHEFFIELD. THE HOPPERS’ PATENT BYE-PRODUCT COKE OVENS AND NEW SYSTEM OF RECOVERING THE BYE-PRObUCTS GIVE RESULTS WHICH HAVE HEWER BEER EQUALLED BY AHY OTHER SYSTEM. See large advertisement appearing in alternate issues of this Journal. All communications to be addressed to — The Koppers* Coke Oven & Bye-Product Co., 301, Glossop Road, Sheffield. Tel. No. 1935. Tel. Address—" Koohs, Sheffield.” Merryweathers’ Patent HATFIELD PUMP MERRYWEATHF.tE LONDON For Fire Protection, Boiler Feeding, Draining, &c. COMPACT. LIGHT. ECONOMICAL. Can be driven by any motive power. An Engineer writes:—’* I am pleased to inform you that the * Hatfield B‘ ,’ump is working splendidly. I have never had the least trouble with it in sny way since it was fixed.’* WRITE FOR PAMPHLET 193p. MERRYWEATHER & SONS, T g Illustrated Catalogue. SMALIMANHAULAGE CLIPS. New Model: Nine Sizes. Patented 1902, 1906 and 1910. Automatic Detachment. The 1911 lever has large lateral stops and a wedge-shaped head. Drop-forged shells (two sizes), levers (four sizes), catches and couplings. HUGE gf PRtSSURES- J.B. , TREASURE trC9, . VflUXHflll R° LIVERPOOL GAUGE GLR55 WA5HfR5 LUBRICATORSetc L/5T5 oh PPPl/C/WOP. MISSES 8 Clips can be had without catches. , Patentee and Sole Manufacturer:— JAMES W. SMALLMAN, NUNEATON, England. E. THOMAS & WILLIAMS Limited. Telephone—No. 7 P.O. Estd. i860. Tel. Address—“Lamps, Aberdare.” OUR IMPROVED MINER’S SAFETY LAMP. The Strongest, most perfect and up-to-date Lamp in the Market, The lighting arrangement is easy and certain in its operation. Our Magnetic Lock is absolutely unpickable, having stood the test of many years' use at the largest Collieries in the country. Our method of re-lighting underground by means of Bowie’s Patent Self Contained Re-lighter is proved to be safe and effective. Complete Installation of Lamps and Accessories on the Hire system. Lamp Rooms fitted on approved modern lines. Makers of the Cunningham-Cadman Cas Detecting Device CATALOGUES AND ESTIMATES FREE. CAMBRIAN LAMP fitted with Magnetic Lock, Electric Ignition and Patent Automatic Lock on Bonnet. Cambrian lamp Works, Aberdare, S. Wales. THE SOUTH WALES COALFIELD. PART II. By Henry K. Jordan, F.G.S. (Past President and first Gold Medallist of the South Wales Institute of Engineers). This Paper, which deals with the western part of the Coalfield, has just oeen published by the South Wales Institute of Engineers. It consists of 31 pages of printed matter with Sections and Diagrams. The large drawings ire issued separately and comprise. 1. A Horizontal Section across the anthracite region of Llandybie and Pant-y-ffynnon, and via the Dulais Valley to the sea at Swansea. It is drawn to a scale of six inches to one mile, is 8 ft. in length, mounted on linen, and geologically coloured. 2. Comparative Sections of the Lower Measures m the following areas — (A) Neath Valley. (E) Ammanford. (B) Swansea Valley. (F) Loughor Valley. (C) Brynamman District. (G) Gwendraeth District. (D) Amman Valley. (H) Gwendraeth District. These are drawn on one sheet, about 35 by 30in., mounted on linen, to a scale of 200 ft. to 1 in. 3. A Map of Swansea District, on a scale of 6 in. to one mile, showing the outcrops of the coal seams. A limited number of the above are for sale, and may be obtained from The Secretary, The South Wales Institute of Engineers, CARDIFF. Price £1 Is., Postage Extra. “The South Wales Coalfield,” Part I., by Mr. H.K. Jordan, published tn 1908, price £2.2s., dealt with the eastern half of the Coalfield, and may be obtained from the Secretarv. SEE OUR STAND, No. 66, Colliery and Mining Exhibition, MANCHESTER, JUNE 12-27. COLLIERY GUARDIAN CO. LTD., LONDON.