May 3, 1918. THE COLLIERY GUARDIAN. 889 AIR COMPRESSORS Standard Types up to 5,000 c. ft. per min. Fitted with special light weight valves, forced lubrication and thorough intercooling arrangements. Special Types for Air and Gas storage at high pressures up to 6,000 lb. per square inch. ■ ■ ■ * Pi ■ tn' MAKERS also of High-Speed STEAM ENGINES, STEAM TURBINES, High and Low Lift Centrifugal Pumps, AND FAHS for all purposes. PETER BROTHERHOOD LTD., MANCHESTER : Mansfield Chambers, St. Ann’s Square. PETERBOROUGH. GLASGOW: R. HENDERSON, 48, West Regent Street. 30-H.P. DOUBLE DRUM HAULAGE GEAR. ■ ar M. B. WILD & CO. LTD., Birmingham. Telephone—208 East. Telegrams—“Hauling, Birmingham.” Manufacturers of Hauling, Winding, and Pumping Plants, also Capstans, Winches, and Patent Dirt Tip. Sole Makers of “Exhall” Overwind Preventer.