470 [supplement PAGE XII.] THE COLLIERY GUARDIAN. August 30, 1918. es CONVEYORS Sections of our Patent Roller Conveyor ‘olco NW N-l io|oo Our Patent Roller Jigging Conveyors are unequalled for efficiency, construction, durability and increasing output. It is the best labour-saving plant introduced into a mine. No. 4 Conveyor will deal with 500 tons per shift. PATENT COMPRESSED AIR-DRIVEN MOTOR. Made in sizes to suit all requirements. MOTOR ARRANGED ALONGSIDE CONVEYOR. Telegrams: “Conveyor, Sheffield.