THE COLLIERY GUARDIAN. 213 February 1, 1918. By Tests The Best “SINGLE HOOD” ACTUAL RESULTS OF TRIALS INCREASE IN EVAPORATION. These tests were carried out at one of the largest Collieries in the United Kingdom. “PERFECTA” BOILER CIRCULATOR Ltd., 39, Victoria Street, LONDON, S.W. 1. ROPEWAYS LIMITED, 2, Eldon Street, South Place, London, E.C. 2. IIIIII.IIIIIIIIIIIIIIIIIIIIH CONSTRUCTORS OF |||||||||||||||||||||||||||| Aerial Ropeways On the “ROE” Systems. FOR the transport of all classes of material over any ground, and for the formation of dumps, spoil banks, &c. Installations at present in opera- tion with carrying capacities of 200 tons per hour and lengths of 30 miles. C Telephone—12780 Central. Telegrams—“Ropeways, London” AUTOMATIC DUMPING WITH BICABLE SYSTEM. A «I, AUTOMATIC DUMPING WITH MONOCABLE SYSTEM. .. I 1 ■ TURBON PATENT FAN CO. LTD., tC3 N13 43 .y. ten" 34, Vlotorl.. Stroat, S.W. 1. 1-4 A-iJ&4 JLrf JK . FINENESS. OUTPUT. FLOUR” OR IMPALPABLE POWDER. MINIMUM POWER. MINIMUM WEAR AND TEAR. No Auxiliary Apparatus required for Finishing the Product. Heavy Construction. OVER 4,000 GRIFFIN MILLS INSTALLED. Also extensively used for grigdin? COAL. LIMESTONE. PORTLAND CEMENT. PHOSPHATE ROCK. ORES OF ALL KINDS. Full particulars on application to— BRADLEY PULVERIZER CO., BE. 37, WALBR00R, LONDON, E C. * PREVENT COAL MINE EXPLOSIONS by dusting your mine with stone 'ground in the GIANT GRIFFIN MILL, As supplied to the leading Collieries. Advantages— MAXIMUM PERCENTAGE OF MAXIMUM MAXIMUM fl F i w TURBON. The LATEST THING in FANS. Equally suitable for Mine Ventilation, forced and induced draught, or any other purpose. Great strength, simplicity and silence. Highest efficiency. Perfect balance at all speeds. Suitable for all pressures. Resists high temperatures without distortion. No rivets in blades. Manufactured by THE WADDLE PATENT FAN CO. LTD.,