830_____________________THE COLLIERY GUARDIAN. ______ April 26, 1918. weTshafts MADE WATERTIGHT BY OUR CEMENTATION PROCESS. SAVES COAL and LABOUR and INCREASES OUTPUT BY DOING AWAY WITH PUMPING. Uay Hall Collieries, Wrexham, 2 wet shafts, linings cemented. Monk Bretton Colliery, Barnsley. Wrexham and Acton Collieries, 2 wet shafts, linings cemented. Wigan Coal and Iron Co. Ltd., Parsonage Colliery, Leigh, Lancs., 2 wet shafts, linings references: cemented. Risehow Colliery Co. Ltd., Flimby, 2 wet shaft linings being cemented. Pinxton Collieries Ltd., Pinxton Collieries, Alfreton, 1 wet shaft lining being cemented. John Brown & Co. Ltd., Rotherham Main Colliery, 2 shafts cemented. SHAFT SINKING BY FREEZING OR CEMENTATION. Uay Main Collieries, Wrexham, 2 shafts sunk by Freezing. _________________________________________________________________________ SIMON-GARVES I? Manchester Phone: 8200 City, Manchester (8 lines). Telegrams: “Simcar, Manchester.” ________________________________________________ THE CONQUEROR OF RUST. BOWRANITE’ The Importance of Rust Prevention ____________________ is now everywhere recognised as the standard protective for Iron and Steel, superseding all paints and varnishes and specified by leading Engineers, Architects and Naval Con- structors for Government and other works. Iff jp In War Work, and all other Iron and Steel Construction, efficient protection against rust demands a thoroughly standardised coating, huilt for the work according to correct scientific tests. Admiralty and other Government Contractors and the leading Constructors and Iron Ship- builders have adopted after rigid practical test THE STANDARDISED RUST PREVENTIVE, “BOWRANITE” “ Bowranite” is sold only by name in branded containers. Un-named bitumen solutions are not “ Bowranite,” and cannot be used where “ Bowranite ” is specified. For particulars of laboratory tests and a long list of leading firms using “Bowranite” exclusively, write to Robt. Bowran & Co. Ld«, 4 St. Nicholas Bldgs., Ne wcastle-on-Tyne. STOCKS HELD AT CHIEF PORTS AT HOME & ABROAD Write for particulars and Trial Tin on this form or on your letter paper. Messrs. Eobt. Bowran & Co. Ltd., 4, St. Nicholas Buildings, Newcastle-on-Tyne. {we} enciose our letter heading. Free of charge, and without committing J to any obligation, please send particulars of “ Bowranite ” tests and a sample tin. Name of Firm,........................................................... Business..................................................................... Address _________________,_____________________________________________________ G ROBERT BOWRAN & CO. LTD., Bowran, Newcastle-upon-Tyne. 4, St. Nicholas Buildings, Newcastle-on-Tyne.