Mineral Resource Map
Map
Browse
About
Mine detail: Lower Middle Ledge
Browse
North America
United States
Washington
Jefferson
Previously called 'Lower Middle Ledge-'
<< Back to the map
Location
Lat / long:
47.7326, -123.12545
Resource(M)
Tertiary:
Manganese
Discovery year:
1951
Production
Operation type:
Surface
Development status:
Past Producer
Geology
References
MAS
530310008
DEP
10277032
Reference
U.S. BUREAU OF MINES RI 5530, 1957, P. 57.
Reporter
Ridenour, James