LODE MINING IN SOUTHEASTERN ALASKA. 67 
The progress in mining development of the Mamie and Stevenstown 
mines, on the east side of the peninsula, may be best expressed in the 
number of tons of ore reduced in the smelter at Hadley, just below the 
two mines. This smelter, which began operations December 5, 1905, 
and was in blast at different periods for about two hundred and sixty 
days during the year 1906, reduced nearly 90,000 tons of ore, most of 
which was from the two mines mentioned. 
At the Mamie mine notable progress was made and its output of 
ore was increased. Exploratory developments by drifts and diamond 
drill were also advanced. 
The Stevenstown mine has had a successful year, with a large ore 
production. The ore body is much like that at the Mamie mine, con- 
sisting of a flat-lying lens of chalcopyrite-pyrite and some magnetite 
associated with hornblende and calcite. These lie in a banded garnet- 
epidote country rock and are crosscut by porphyrytic and diabasic 
dikes striking in various directions, most of which we e intruded sub- 
sequent to the deposition of the ore. To the northeast a narrow belt 
of crystalline limestone was observed at one point overlying the ore 
body and apparently is the remnant of a broad limestone belt that 
has been removed by erosion. The developments consist of wide 
surface pits undercut by tunnels from which the ore is delivered to 
the aerial tram and thence to the smelter 1 mile distant. 
An exploratory tunnel 300 feet in length, which undercuts a low- 
grade magnetite ore body exposed on the surface, has been driven on 
the Blue Jay claim, and at other points on the property small cuts and 
trenches have been made. It is planned to extend the investigation 
of these deposits by a diamond drill. 
On the west slope of Kasaan Peninsula is the Mount Andrew mine, 
which for several years previous to 1906 was idle. The first of the 
year operations were renewed and were energetically advanced, so 
that at the time of the writer's visit, in October, the first ore ship- 
ments were being made to the smelter at Crofton, B. C. The under- 
ground workings consist of nearly 500 feet of tunnel drifts and cross- 
cuts, and in the main tunnel two workable ore bodies, from 25 to 75 
feet in lateral dimensions, have been opened. On the surface a third 
ore body, similar in size, but of somewhat lower grade, has been par- 
tially developed. A cable tram 3,600 feet long has been installed and 
large ore bins and a wharf have been built at tide water. 
From the White Eagle mine a shipment of 350 tons of ore was 
made in February, but since that time work has been suspended. 
Prospecting during the summer between the White Eagle and Mount 
Andrew properties revealed new bodies of copper-bearing ores, which 
were located and exploitation was begun. 
To the northwest, about 3 miles from the village of Kasaan, is the 
Mammoth group, purchased by the Haida Copper Company in June. 
