The Office of Industrial Technologies (OIT) of the U. S. Department of Energy commissioned the National Research Council (NRC) to undertake a study on required technologies for the Mining Industries of the Future Program to complement ...
See www.grantadesign.com for information NEW TO THIS EDITION: Text and figures have been revised and updated throughout The number of worked examples has been increased by 50% The number of standard end-of-chapter exercises in the text has ...
Found inside â Page 153Inc : 1969 , PQ chart . ... Name changed Jan 1987 from Dynamic Mining Exploration L , 1 new sh for 10 old shs . ... pros , 190 cls , 5,560 ac , incl former prod , Walton area , Hants cty , NS ; optioned to Gunnar Gold which can earn 25 % int . ... Property : Iron pros , 85 cis , Temagami area , Scholes twp , N Ont . Large tonnage iron - bearing material indic by d d ; 3 - compartment shaft to 1,177 ft with lateral ...
Found inside â Page 149The Meyer & Charlton Gold Mining Co. has a direct - coupled Ward - Leonard hoist operating at 2,500 ft . per minute ... 5 and 6 , and the results for a year's work plotted together with the shaft horsepower - hours ( Fig . ... The wattmeter chart also shows clearly the effect of the dynamic braking in returning power to the line .
Found inside â Page 367The Meyer & Charlton Gold Mining Co. has a direct - coupled Ward - Leonard hoist operating at 2,500 ft . per minute ... 5 and 6 , and the results for a year's work plotted together with the shaft horsepower - hours ( Fig . ... The wattmeter chart also shows clearly the effect of the dynamic braking in returning power to the line .