Conjecture Mine and Confed Properties
The Conjecture Mine is located in the Lakeview Mining District of Idaho,
some 30 miles to the northwest of the Coeur d'Alene mining district. The
rock groups of the Lakeview District are the same Precambrian belt 
series
associated with the silver deposits of the Coeur d'Alene mining district
to the south. The Confed Claims Group, including the Conjecture mine, consists
of 6 patented and 6 unpatented lode claims totaling 240 acres.
Exploration History
In the late 1950s and early 1960s, Federal Resources invested approximately $3 million in the Conjecture extending the inclined shaft to the 700-foot level, and added a 200 foot vertical shaft. Also developed were the 700, 1000, 1600 and 2000-foot levels along 2500 feet of strike, totaling over 13,000 feet of workings. Sunshine Mining conducted further exploration and development work.
Sunshine published an estimated resource contained within the Conjecture. This estimate cannot be validated by Shoshone, and does not conform to descriptive terms currently accepted by the SEC.
| Total proven and probable reserves | 326,750 tons | 11.8 opt silver |
|---|---|---|
| Total possible reserves | 370,000 tons | no grade stated |
| Source: Sunshine Mining Internal Report 1973 | ||
Incomplete, historic production records are shown in the table.