) 
MINES OF BATTLE MOUNTAIN, EAST GROUP. 431 
183 acres in the shape of an irregular strip of territory, nearly a mile long and about 
one-third of a mile wide, which stretches north and south over the eastern summit 
of Battle Mountain. South of the Portland property are those of the Stratton’s 
Independence (Limited), and the Strong Gold Mining Company; west of it are the 
Dillon, Monument, Granite, and Ajax mines; on the north the Blue Bird and Last 
Dollar mines; and on the east the Modoc and Rigi mines. 
At present the mine has three working shafts and the largest and most com¬ 
plete equipment in the district. The Portland Company operates its own mill near 
Colorado Springs. 
PRODUCTION AND DIVIDENDS. 
The following table, compiled from the admirable annual reports of the Port¬ 
land Company, gives the tonnage, gross value, and average value per ton of the ore 
raised from the mine, also the dividends from April 1, 1894, to the end of the year 
1905. In the next to the last column is given the proportion of silver to gold in the 
ore for those years for which data are obtainable. This proportion is expressed fyy 
giving the ounces of silver present with 100 ounces of gold. 
Production and dividends of the Portland mine. 
1894 
1895 
1896. 
1897 
1898 
1899. 
1900 
1901 
1902 
1903 
1904. 
1905. 
Total 
Year. 
Net tons. 
Gross value. 
Average 
value 
per ton. 
Ounces of 
silver per 
100 ounces 
of gold. 
Dividends. 
7,826.286 
$553,975. 75 
840. 78 
*67,290 
.31,616. 346 
1,700,094.89 
53,94 
479,790 
23,598.172 
1,116,128. 29 
47.29 
360,000 
18,852. 224 
1,177,642.65 
62.46 
360,0C9 
27,798. 850 
1,879,681.96 
67.61 
570,000 
38,548. 090 
1,951,219. 34 
50. 61 
6.87 
720,000 
60,786. 755 
2,351,369.26 
38.68 
4.30 
750,000 
76,905.550 
2,408, 413. 23 
31.31 
2. 41 
720,000 
89,664. 279 
2,334,023. 76 
26.03 
(°) 
270,000 
90,244. 582 
2,608,993.59 
28.91 
(o) 
360,000 
96,521. 385 
2,597,993.82 
26.91 
(“) 
720,000 
109,232.000 
2,422,033. 42 
6 23.60 
(“) 
671,394,519 
23,101,569.96 
5,377, 80 
a Output for this year given as ounces of gold. 
t> Low-grade ore from dumps (8,246 tons at $5.84 per ton) is not included in this average. 
UNDERGROUND DEVELOPMENT. 
According to the report of Mr. F. M. Kurie, manager, the linear development 
of the Portland mine, including drifts, crosscuts, shafts, winzes, and raises amounted 
on January 1, 1905, to 30 miles 3,513 feet.® From 3 to 4 miles of new development 
are completed each year. 
The main working shaft is the No. 1, or Burns, 1,120 feet deep, situated on the 
south slope of Battle Mountain near the south end of the Portland property. The 
No. 2 shaft, 1,282 feet deep, lies 750 feet about north-northeast from the Burns 
shaft, and 162 feet higher up on Battle Mountain. The No. 3 shaft, 1,155 feet 
a Total development to January 1, 1906, 34 miles 3,466 feet. 
