116 



MINING INBTTSTEY. 



mine cost $160,488 76, or nearly S2 50 per ton of ore produced. In 1865, 

 for same purpose, were expended $147,382, 92, or over $3 per ton. 



The following statement, prepared from the annual reports of the Savage 

 Mining Company, shows the consumption and cost of timber used in their 

 mine during three years: 



Year ending June 30 — 



1867 

 1868 

 1869 



Timber. 



Feet, b. m. 

 1,785,956 

 2, 075, 567 

 1,352,716 



Lumber. 



Feet, b. m. 

 499, 704 

 544, 599 

 363, 388 



Spiling. 



Pieces. 

 10, 307 

 15, 028 

 10, 057 



Total cost of 

 materials. 



$69,982 59 

 82,785 65 

 51, 102 18 



The cost as stated in the foregoing applies to the material alone, without 

 including the labor of framing and putting in place. It covers the whole 

 amount of timber and lumber used in the mine, in all the various departments 

 of the work, and may be analyzed about as follows : 



Cost of Timber and Lumber coiisumed in the Savage Mine per ton of ore produced. 



During year ending June 30 — 



In extrac- 

 tion of ore. 



In prospect- 

 ing work. 



In accessory- 

 work. 



In improve- 

 ments. 



Total per 

 ton. 



1867 

 1868 

 1869 



Cents, 

 63 

 51 

 42 



Cents. 

 12 



13 

 16 



Cents. 



13 

 24 



34 



Cents. 

 10 

 06 

 03 



Cents. 

 98 

 94 

 95 



In the Hale and Norcross Mine the cost of timber during the past two 

 or three years is shown by their reports to be about $1 per ton of ore pro- 

 duced. 



Ore Extraction. — The ore, as it is worked out or broken down by the 

 miners in the stope, is thrown down to the track-level of the station below, 

 either falling upon the floor of the drift or into a receiver or bin, whence it is 

 loaded into the drift-car and carried to the shaft. There the car, containing 



