550 THE COLLIERY GUARDIAN. March 24, 1916. ^Illllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll^ THE COTTON POWDER Co. Ld„ Manufacturers of Explosives for Mining Purposes. DEY DAUHIED HLA ■ UWUEll NEW PERMITTED EXPLOSIVE For all kinds of work. HEAD OFFICE: 24, WALBROOK, LONDON, E.C. JOHN WOOD & SONS, L" Engineers, BARLEY BROOK FOUNDRY, WIGAN. Telephone—No. “ 55 ” Wigan. Telegrams—“ Haulage, Wigan.” and Improved “ OUTSIDE- BAND” FRICTION CLUTCH. 100-H.P. “ENDLESS” Fitted with AUTOMATIC BRAKE Haulage Gears of every type. , PUMPING & AIR COMPRESSING ENGINES.