28 



Fathoms. 



Length of lower level 34 



Upper gallery, north 8 



" " south 16 



Main shaft 16 



Main adit 31 



Strike, north and south; dip, 58 east; power, 9 feet; dead work, $4,500. 



CHARACTERISTICS OF THE LODE. 



The lode is situated in talcose slate, the superior portions of both being much 

 decomposed and easily removed. A large amount of the upper portions of the 

 vein contains cavities holding free gold. At the depth of about forty feet the 

 vein becomes more compact and pyritous, having a slight ribbond appearance, 

 from a small quantity of gruphite being distributed through the seams. The 

 rock is thoroughly impregnated with thin, glistening scales of greenish and 

 whitish talc, the latter often covering the surfaces of fractures entirely, and the 

 latter containing microscopic particles of gold in considerable quantities; at times 

 the surfaces are well filled with fine spangles of gold visible to the naked eye. 



This lode contains lead and molybdenum in small quantities, in khe form of 

 sulphurets, at times distinct but most commonly combined in the same mineral. 

 Among the ferruginous sulphurets a small quantity of arsenic is noticeable, but 

 to no considerable extent. 



This mine is situated in the corporate limits of the City of Placerville, and 

 immediately south of the center of the corporation. 



EUREKA MINES, SUTTER, AMADOR COUNTY. 



Cash capital invested, $32,000. The location of this mine was made in the 

 early part of 1852, since which time it has been actively worked up to the present 

 date. Among the early adventures in gold mining proper, the persons who com 

 pose this company were among the first who entered the field of research to de 

 velop and demonstrate the feasibility and practicability of this branch of industry 

 in this State. 



Their first operations were cotemporaneous with the fe\v who launched on this 

 tide of speculation in the County of Nevada, and with others in the Counties of 

 Ainador (Calaveras) and Mariposa. 



The difficulties encountered by these parties at the outset were such as to dis 

 hearten most of mankind, but a cool determination and prudence in the manage 

 ment of their affairs has enabled them ultimately to overcome the multitudinous 

 obstacles that opposed their way, and ride out safely the wild tornado of public 

 opinion that made its inception against them during the latter part of 1852 and 

 the beginning of 1853. 



From the early part of the latter year the company progressed steadily in their 

 operations, and in the latter part of that year the following was the condition of 

 their mine : 



Near the center of the lode which forms their property, they had sunk one shaft 

 to the depth of seven fathoms ; at the bottom of this shaft a level was carried 

 south one hundred and forty-three feet, and north ninety-five feet, making two 

 hundred and thirty-eight feet of levels at the close of that year. 



During this year a heavy and long adit was commenced on the east side of the 



