August 18, 1916. THE COLLIERY GUARDIAN. 297 Walter Scon Ltd. Leeds, LEEDS STEEL WORKS, England MANUFACTURERS OF BRITISH STANDARD ROLLED STEEL JOISTS, CHANNELS TRAMRAILS AND PERMANENT WAY RAILS, &c. Pit Head Frame, k Erected in Works for inspection. Example of 10 in. x 6 in. ■ 421b. R.S. Joists curved for Framework to Roadway. ROLLED STEEL JOISTS for PIT PROPS, FRAMEWORK TO ROADWAYS. Ac. STRUCTURAL STEELWORK FOR BUILDINGS, &c. Mild Steel Blooms, Billets, Slabs, Tinbars, Rounds & Flats. Rolls cut for Special Sections and to approved quantities. Books of Sections and other information on application. Keith Fans Keith ‘i Keith Mine Fan Plant. COMPLETE PLANTS ALSO FOR Dust Exhausting, Forge Blowing, Cupola Blast, Smoke Removal, &c. 27, Farringdon Avenue, .... LONDON. And at Manchester, Newcastle, Cardiff, Leeds, Glasgow, Edinburgh, &c. Induced Draught Plant. ___ ______ NEW EXPLOSIVES COMPANY Ld. ESTABLISHED 1865. ------- Manufacturers of ---- Every description of High Explosives for Mining and Blasting Purposes. STOMONAL No. 1. The Ideal “ Permitted ” Explosive for Coal Mines. Particulars and Prices on application to the Company or any of their Agents. Works: Stowmarket, Suffolk. Head Office: 62, London Wall, London, E.C.