April 19, 1918. THE COLLIERY GUARDIAN. 791 SIMPLEX HEAVY SCREWED CONDUITS AND CONDUIT FITTINGS’ K eT SUBSTANTIAL Electric Light and Power Installation Material for Factories & Mines has been -----developed by--- SIMPLEX CONDUITS Ltd. in a thorough and thought- ful manner. Design Manufacture & Assembly are all of prime importance —and to each of these we pay most careful attention. SIMPLEX CONDUITS Ltd. HEAD OFFICE AND WORKS: GARRISON LANE—B’HAM. GREENWOOD & BATLEY Ltd., ALBION WORKS, LEEDS. Telephone—5200 LEEDS. | Telegrams-“GREENWOOD, LEEDS.” 7965 _r . STEAM TURBINES HIGH PRESSURE,—EXHAUST STEAM,—MIXED PRESSURE. FROM 3-B.H.P. TO 600-B.H.P. Part of order for totally enclosed gas- proof Mining Motors with ball bearings and plate glass spy holes. s? ELECTRIC MOTORS AND GENERATORS, A.C. AND D.C., FOR ALL PURPOSES. PLOWRIGHT BROS. LTD., Brampton Iron Works, Chesterfield. Speciality- COAL SCREENING s CONVEYING r ■ II Si J? f ■ ■■■ ' ' 4 4 A «. > A ij “SECTION OF SCREENING PLANT AT BENTLEY COLLIERY DONCASTER. CONSIDERABLY OVER 100 PLANTS NOW AT WORK IN GREAT BRITAIN AND THE COLONIES. Estimates and Designs on application HOPKINSON patcnt,. dflioop’SS SAFETY BOILER MOUNTINGS. PATENT ABSOLUTE Water Gauge for Water-Tube, Lancashire and Marine Boilers, Locomotives and Steam Separators. J. HOPKINSON & CO. LTD., Britannia Works, HUDDERSFIELD. LONDON - GLASGOW - PARIS - PETROGRAD. No. 400.__________ _______________