922 THE COLLIERY GUARDIAN. May 11, 1917. M. COULSON & CO. LTD., SPENNYMOOR, Makers of Coal Washers, Screening Plant, . . Conveying, Elevating, and Crushing Machinery, Tipplers, Tub Controllers, . . Storage and Drainage Bunkers. . . A Estimates and Full Particulars on Application. ~ Replace parts and Repairs given Special Attention. CEMENTATION and CHEMICAL TREATMENT YEARS of STUDY and EXPERIENCE HAVE BROUGHT MY SYSTEM OF CEMENTATION TO PERFECTION. TO COLLIERY PROPRIETORS. Shafts sunk, tunnels driven, and other mining constructions carried out in difficult and very wet ground by the best method. Success guar- anteed. 18 shafts completed in England, and 7 in progress. Ferro-Concrete Lining a speciality. Feeders of water in shafts or levels effectually treated. ALBERT FRANCOIS, Whi^cIsTET Telegrams—“ Francois, Doncaster,” Telephone—408 Doncaster. SPECIAL Self-contained MACHINE for CORRECT GRINDING of STONEDUST For FIERY WORKINGS. BRICKMAKING MACHINERY Suitable for COLLIERY SHALES. Richard Scholefield, Leeds. Phone 1513. ENQUIRIES SOLICITED. Wire “Brick, Leeds.” Partners: Albert J Frarcois (Belgian); Thomas Blandford. NEWTON, CHAMBERS * & Co. Ltd., THORNCLIFFE IRONWORKS, NEAR SHEFFIELD. ESTABLISHED 1793. TANKS in Cast Iron or Steel. GENERAL CASTINGS, CONSTRUCTIONAL STEELWORK. CONTRACTORS to the ADMIRALTY, WAR OFFICE, and CROWN AGENTS for the COLONIES. Telegrams-" NEWTON, SHEFFIELD.” Telephone No. 2200 Two Lines. ENQUIRIES Solicited. Telegrams— / METALLOID. S X / z J. S. UNDERWOOD « C" Cotton Mill Row, SHEFFIELD. Telephone- \ 3573. WIRES AND CABLES. THE WHOLESALE ELECTRICAL CO. LTD., 54/56, Oxford Street, London, W. 1. 'Phone : Museum 1897. MANOR WORKS SHEFFIELD •I. i1 i- ~ f z, > ) _ GEORGE ANGUS & CO. LTD., NEWCASTLE-ON-TYNE. CONVEYOR BELTS of ALL DESCRIPTIONS. 1 SEND FOR PRICES. 11 And at London, Liverpool, Birmingham, Manchester, Leeds, Glasgow, Cardiff, And JOHANNESBURG-