1200 THE COLLIERY GUARDIAN._______ June 29, 1917. ^SEY0UR0^z BY USING “DIAMOND” Coal-Cutters (“DIAMOND” ENCLOSED TYPE COMPRESSED AIR COAL-CUTTER.) AND Coal-Face Conveyors DIAMOND 273 (“DIAMOND” COMPRESSED AIR JIGGING CONVEYOR.) FOR POWER, RELIABILITY and OUTPUT DIAMOND MACHINES ARE UNEQUALLED. DIAMOND COAL-CUTTER CO., Telegrams- Lf E" |T I ET I Telephone- “ Diamond, Wakefield.” Fvk Kbh I Kin Km ■ No. 141 Wakefield. Branch Works at UDDINGSTON, nr. GLASGOW.