May 30, 1913. THE COLLIERY GUARDIAN. 1139 NO one interested in a CHEAPER & LARGER OUTPUT OF COAL . can afford to miss seeing Stand 24-26, Row C, (98 feet by 24 feet) AT THE MACHINERY EXHIBITION Because We are showing our PATEHT ROLLER (jOHVETOBS at work, Electrically and Compressed Air driven, also the latest in WINDING ENGINES, COLLIERY TUBS, BRAKES, &c. MINING APPLIANCES CO., 32, Church Street, Sheffield. Telegraphic Address—“Conveyor, Sheffield.” Telephone—2401 Central.