LODE MINING IN SOUTHEASTERN ALASKA. 37 
LEMON CREEK. 
The placer mining claims on the gravels of Lemon Creek extend from its mouth to Lemon 
Creek Glacier, a distance of 6 miles. During the past year careful tests were made on I hese 
deposits and the gold content of the gravels found to be very low. In October, 1905, opera- 
lions ceased, with apparently no prospect of continuation. 
At the head of the creek lode claims were located on quartz veins in the schist belt, but the 
gold values in these are low, and under present conditions are of little importance. 
SALMON CREEK. 
The Wagner prospect . on the south side of Salmon Creek near its mouth, is located on a 
quartz lode which varies in width from a fraction "of an inch to 8 feet and follows the con- 
tact of altered slate and greenstone, striking N. 20° W. and dipping 40° NE. The ore 
contains arsenical pyrite, pyrite,and chalcopyrite, also some galena and sphalerite. Nearly 
100 feet of tunneling have been completed, and during the summer a small testing mill 
was placed on the property. 
GOLD CREEK. 
In view of the detailed report on this area by A. C. Spencer,« already in press, only a 
arief mention will be made of the mine developments during the last year. 
Developments at the Ebner mine have progressed without interruption, and an average 
jf 15 men has been employed throughout the year. The ore bodies are mineralized 
liorite dikes cut by quartz gash veins, adjacent to which the rock is penetrated by aurif- 
erous sulphides. The total underground developments amount to nearly 4,000 feet of 
/Unneling and drifting, besides the large stopes. It is reported that the total amount of 
we milled through the 15-stamp mill on the property has been 80,000 tons. 
As the greater portion of the ore is free milling, amalgamation is the only recovery 
process employed. Concentration of the ore was originally a feature of the reduction 
plant, but the value of the concentrates was found to be insufficient to pay the costs of 
landling, transportation, and smelting. The total power required for mill and mine is 
stimated to be 125 horsepower, which is furnished by the waters of Gold Creek, often 
luring the entire year. 
At the Alaska Juneau mine the mineral deposit is similar to that of the Ebner mine, 
Dut here the slate carries sufficient values near its contact with the diorite to make ore, 
find the occurrence of free gold is more plentiful. The operations of the company have 
consisted largely of surface investigations of a wide mineralized area on the west slope of 
Silver Bow Basin. The workings comprise several tunnels which undercut the ore body 
md are connected by raises with large open cuts or pits, thus permitting economical 
landling of the ore. The total amount of underground developments aggregates nearly 
5,000 feet of tunnels, crosscuts, and raises. The annual report to January 1, 1905, gives 
i total of 24,915 tons of ore milled through the 30-stamp mill on the property, and a simi- 
ar amount may be estimated for the present year. The mill was in continuous operation 
rom April to November, the working season of this mine. 
A careful sampling of the ore body was in progress during the summer to determine the 
iverage value of the ore at the tunnel level. For this purpose a width of 3 feet was mined 
'rom the sides of the lowest tunnel which crosscuts the deposit, and the ore thus derived 
as tested in a 5-stamp mill, which was built at the beginning of the year in the basin below 
the mine. 
The locations of the Alaska Perseverance Company are on the southwestern extension 
f the mineral belt exposed on the Ebner and Alaska Juneau properties, already described. 
It this mine preparations for large-scale operations are rapidly being advanced. The 
Alexander tunnel has been extended to a length of 2,500 feet, and at a point 2,150 feet 
rom its mouth a vertical raise 842 feet in length and 4| by 12 feet in cross section connects 
a The Juneau gold belt: Bull. U. S. Geol. Survey No. 287, 1906. 
