468 THE COLLIERY GUARDIAN. March 9, 1917. .«S>SE Y0UR 0Ur BY USING ' “DIAMOND” Coal-Cutters * C "4 • S IT ■-------------------------------------' a ; FOR POWER, RELIABILITY and OUTPUT DIAMOND MACHINES ARE UNEQUALLED. DIAMOND COAL-COTTER CO., Telegrams- \A/ A If ET F I ET I Telephone- “Diamond, Wakefield.” VV F\ b I I k No. 141 Wakefield. Branch Works at UDDINGSTON, nr. GLASGOW.