248 



MINING INDUSTEY. 



Comparative statement of Operations of twenty-one different mills treating ore from Savage Mine between July 



I, 1867, and February I, 1868. 



5 





Assay value of 



Relative proportions of 





Yield per 





Percentage of gold ajid 



bo 





ore per ton 



gold and silver in the 





cent, as 



Relative 



silver obtained as 



1 



Amount of 



as per — 



ore as per — 





per — 



proportion 



per — 







ore m — 

















in the bul- 















Mill 



Wagon 









lion of— 



Mill 



Wagon 



3 









"3. 



i 



a 

 



sample. 



sample. 







u 

 u 

 ft. 



2 







S 



1 





sample . 



sample. 



■a 







Eh fc 



2 







u 

 





 



u 

 > 



2 

 '0 









2 







u 



<1J 

 > 



•6 

 1 



u 



No. I 



5,830 





$54 65 



§55 61 



29-5 



70.5 



28.5 



71-5 



$37 86 



69.2 



68.0 



36.3 



63.7 



85.3 



62.5 



86.5 



60.7 



2 



6,720 



- - 



55 66 



53 35 



29.7 



70-3 



28.0 



72.0 



3867 



69.4 



72.4 



36.0 



64.0 



84.0 



63.3 



93-2 



64.4 



3 



5,109 



1,080 



124 25 



142 81 



22.3 



77-7 



25-9 



74-1 



78 16 



62.9 



54-7 



36.6 



63.4 



103.0 



51-3 



77.1 



46.8 



4 



3,090 



1,380 



SO 22 



50 12 



29.7 



70.3 



29.2 



70.8 



32 47 



64.6 



64.7 



37-5 



62.5 



81.6 



57-4 



83.2 



57-1 



5 



7,334 



0,500 



48 34 



so 94 



27.2 



72.8 



28.3 



71.7 



32 95 



68.1 



64.6 



36-3 



63.7 



91.0 



59-6 



82.8 



57-5 



6 



7,871 



1,060 



49 24 



48 68 



3I.5 



68.5 



28.4 



71.6 



33 98 



69.0 



69.8 



34-3 



6S.7 



75-1 



66.1 



84.2 



64.0 



7 



4,713 



1,140 



47 86 



SO 27 



28.0 



72.0 



27.4 



72.6 



34 97 



73-0 



68.7 



32.8 



67.2 



85.5 



68.2 



82.8 



63.4 



8 



507 



1,170 



49 79 



55 24 



30.8 



69.2 



27-3 



72.7 



28 70 



57-6 



51-9 



40.4 



59-6 



74-3 



49.6 



76.8 



42. 5 



9 



1,821 



1,670 



48 98 



59 74 



34-4 



65.6 



«9-4 



70.6 



36 29 



74.0 



60.7 



38.7 



61.3 



83.2 



69.2 



79.6 



50.2 



10 



825 



0,490 



49 69 



51 70 



32.0 



68.0 



28.3 



71.7 



30 43 



61.2 



S8.8 



38.3 



61.7 



73-1 



55-6 



79-4 



50.7 



11 



800 



- - 



47 58 



54 44 



29.2 



70.8 



28.4 



71.6 



32 24 



67.7 



59-2 



35-1 



64.9 



81.4 



62.1 



72.9 



53-7 



12 



2,744 



1,810 



47 27 



53 96 



27.0 



73-0 



28.6 



71.4 



33 34 



70.3 



61.8 



37-9 



62.1 



98.7 



60.0 



81.7 



53-8 



13 



3,618 



1,180 



43 04 



47 67 



27.4 



72.6 



28.2 



71.8 



29 37 



68.2 



61.6 



35-7 



64.3 



89.0 



60.4 



78.0 



55-1 



14 



1,544 



0,150 



54 37 



46 43 



30.5 



69-5 



28.8 



71.2 



32 94 



60.5 



70.9 



36.5 



63.5 



72.5 



55-3 



90.0 



63.1 



15 



1,500 



0,900 



44 37 



51 14 



21.1 



78.9 



29.9 



70.1 



34 47 



77.6 



67.4 



41.2 



58.8 



151-3 



57-9 



92.6 



56.6 



16 



368 



0,310 



48 45 



52 56 



29-3 



70.7 



28.0 



72.0 



35 96 



74.2 



68.4 



34-1 



65-9 



86.3 



69.2 



83.0 



62.7 



17 



298 



1,510 



46 25 



52 42 



28.8 



71.2 



31-3 



68.7 



31 07 



67.4 



52.2 



40-5 



59-5 



94.2 



56.2 



76.5 



51-4 



18 



1,116 



0,700 



48 37 



52 60 



28.7 



71-3 



28.1 



71.9 



27 94 



57-7 



53-1 



37-8 



62.2 



76.0 



50.4 



71-5 



4S'9 



19 



250 



1,920 



44 93 



4863 



24-3 



75-7 



27-3 



72.7 



32 30 



71.9 



66.4 



33-0 



67.0 



97-3 



63.7 



80.0 



61.3 



20 



250 



0,670 



46 24 



58 15 



30.6 



69.4 



29.0 



71.0 



31 40 



67.9 



54-0 



42.5 



57-5 



94-2 



56.3 



80.8 



43-3 



21 



340 



- - 



56 50 



53 68 



28.6 



71.4 



28.4 



71.6 



36 00 



63-7 



65-4 



36.0 



63.8 



80.4 



57-0 



82.0 



58.4 



56,656 



1,640 



56 62 



59 77 



27.8 



72.2 



27.8 



72.2. 



38 27 



67.5 



63.8 



36.2 



63.8 



87.9 



59-7 



82.8 



56.5 



Total assay value, as per mill samples, gold . . $892,213 60 

 Total assay value, as per mill samples, silver . 2,315,810 07 



Total 3,208,023 67 



Bullion produced, gold $784,680 86 



Bullion produced, sUver 1,383,744 54 



Total 2,168,425 40 



Notes on mills referred to in foregoing tahle. 



No. 1. Wheeler Pan : Charge of ore 1,000 pounds ; salt 3 pounds ; 

 sulphate of copper three-fourths of a pound ; quicksilver 60 pounds, added 

 after two hours' grinding. Steam admitted directly. Time in pan, four 

 hours. 



No. 2. Details as in No. 1. 



No. 3. This was all second-class ore, consequently less docile. Salt is 

 used with each charge, but only a pinch of sulphate of copper. 



I 



