130 THE COLLIERY GUARDIAN. Jury 17, 1914. PERMITTED EXPLOSIVE NO HARMFUL FUMES. Maximum Charge 36 ozs. 273 Pendulum Swing; PATENT APPLIED FOR. In dusty and gaseous mines this Explosive provides a larger margin of safety than any other Explosive on the Permitted List. THE BEST ON THE LIST Write for Samples and price to— CURTIS’S & HARVEY LTD LONDON, 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 Allen’s Special Stone Dust Making Plants. They are simple, strong and self-contained. They have many advantages over other types of machines. If you do not yet know about them, write at once for details ! Edgar Allen & Co. Limited, Imperial Steel Works, SHEFFIELD. BELT PULLEYS, Spread Arms. ' z" J Strong, Flat or Convex. Douglas FRASER & SONS Ltd., C. Dept., Westburn Foundry ARBROATH. THE SOUTH WALES COALFIELD. PART II. By Henry K. Jordan, F.G.8. (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 been published by the South Wales Institute of Engineers. It consists of 81 pages of printed matter with Sections and Diagrams. The large drawings are 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 in 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 Al la., Postage Extra. *• The South Wales Coalfield,” Part I., by Mr. H. K. Jordan, published in 1908, price j82.2s., dealt with the eastern half of the Coalfield, and may be obtained from the Secretary. Sfej SAYEC.B'f HANLEYS FAP ,HOLDEMRITE,FROM , HOLDEM Rp N