1272 [supplement page vih.] THE COLLIERY GUARDIAN. June 21, 1918. •M. Sections of our Patent Roller Conveyor. io|oo ‘olco <0 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.”