8/14/2013
8/14/2013
8/14/2013
Landmark information
- Location:
Site 1.5 mi SW of intersection of Hwy 20 (pm 29.5) and Sulphur Bank Rd, 1.5mi S of Clearlake Oaks - Plaque:
No Plaque - Site:
Existing - Date First Visited:
6/4/2002 - Date Most Recently Visited:
8/14/2013 - GPS Coordinates:
N 39 0.202, W 122 39.657
About this landmark
From the state:
This sulphur mine also became one of the most noted quicksilver producers in world. First worked for sulphur in 1865, in four years it produced a total of 2,000,000 pounds - reopened and developed for quicksilver in 1873, it is credited with total output of 92,400 flasks, and was an important producer in World Wars I and II.