Electric Power Dam on Missouri at Great Falls. 



limited by the tonnage which can be hauled over the steep mountain grades. Inas- 

 much as electric locomotives have a much greater continuous power capacity than 

 any steam locomotives yet built, it follows that heavier trains can be handled over 

 the steep grades at considerably increased speed and the tonnage hauled over the 

 division, increased accordingly, wbile to get a corresponding increase with steam 

 operation would require double-tracking the road. 



In addition to this, the electric road will do away with the possibility of forest 

 fires from locomotives in these mountain forest reserves through which the trains 

 pass. 



Used in Mines and Smelters. 



The great copper and zinc mines of the Butte district and other metalliferous 

 mines throughout the state, are using electric power almost exclusively. A lessened 

 cost of production has resulted, enabling many mines to now be operated at a profit 

 which could not be worked with more expensive power. 



In the application of electricity to extensive mining operations Montana has 

 easily assumed first place, and the energy obtained from distant water powers is 

 being conducted to remote places, difficult of access, where it performs an infinite 

 variety of work in a most economical and efficient manner. So satisfactory have 

 been the results obtained that it has practically superseded steam power, and is 

 now driving the enormous hoists, compressors, pumps, mills and other mechanical 

 appliances used in the gigantic mining operations carried on at Butte and in the 

 great smelters of the Anaconda Copper Mining company at Anaconda and Great 

 Falls, and that of the American Smelting and Refining company at East Helena. 



