July 5, 1918. THE COLLIERY GUARDIAN. 35 BOVING PUMPS THE MOST RELIABLE AND EFFICIENT BRITISH MADE PUMP. r.p.m. g.p.m. feet. 2 SINKING PUMPS as shown (Repeat Order). 333 475 1,450 c as .A LARGE MINING PUMP (6 Repeat Orders). 860 g.p.m. 755 feet. 1,450 r.p.m. BOVING & CO, LTD., LONDON. STEEL WORK PUMP, Medium Pressure. 800 g.p.m. 125 feet. 1,450 r.p.m. 2 SMALL MINING PUMPS. 220 g.p.m. 328 feet. 2,900 r.p.m. bovin6 STEEL WORK PUMP, Low Pressure. 3,000 g.p.m. 40 feet. 725 r.p.m. BOVING and CO. Limited, HYDRAULIC ENGINEERS, Telegrams : “JENORTEN, WESTCENT.” Telephones : HOLBORN 6420 (3 lines). 56, Kings way, LONDON, W.C. 2.