90 



Investments, - - - $1,127,000 



Gross receipts, - 2,157,510 



Total capital and products, - $3,284,510 for 1854. 



From the above it appears that the aggregate product of these mines is about 

 four per cent, of the product of the State, as far as the latter is known with any 

 degree of certainty. 



The aggregate number of persons actively employed in extracting the ores, and 

 in reducing the same, amounts to six hundred and ten, bearing a very small pro 

 portion to the great mass engaged in the other branch of mining in the State. 



In regard to the above figures, I would state that they represent rather the 

 minimum than the maximum of investments and receipts, and it has been a leading 

 object in collating these statistics, to avoid those extravagant estimates, heretofore 

 indulged in, with relation to this subject. 



The above list of additional mines, with the number still actively engaged from 

 last year, swellii the aggregate number for 1855, to fifty-three mines in actual 

 operation, and a net increase of thirteen from the preceding year over all that 

 have suspended for any considerable length of time. 



WATER COMPANIES. 



The table below will give an approximate idea of the value and extent of our 

 artificial water courses, constructed for the purpose of facilitating mining opera 

 tions The valuation in the aggregate of the counties are placed at those figures 

 on which they are known to yield a profit of five per cent, per month. The esti 

 mates are based on a careful examination of the aggregate receipts of eighty-three 

 of one hundred and nine companies included, and our list comprises but seven of 

 the principal mining counties of the State. Much interesting local details was 

 obtained, which the want of time this year prevents from appearing in these pages : 



TABLE. 



Counties. No. Companies. No. Miles. Valuation. 



Amador, 15 129 $298,000 



Calaveras, .... 12 165 397,000 



El Dorado, - ' - - - 10 173 380,000 



Nevada, 27 210 412,000 



Placer, 11 160 369,000 



Sierra, ----- 14 137 180,000 



Tuolumne, - - 20 185 446,000 



Total, - - - - 109 1,159 $2,480,000 



