Guidebook
NO. 428 SULPHUR BANK MINE - 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.
Location
Intersection of State Hwy 20 (P.M. 29.5) and Sulphur Bank Rd, 1.5 mi S of Clearlake Oaks
Open Map
Notes
We found no plaque at the location that was listed in the guidebook.
Sulphur Bank Mine - Warning Sign
![Sulphur Bank Mine - Warning Sign](https://res.cloudinary.com/hmwsi1uow/image/upload/c_scale,w_800/q_auto/v1433838920/vsikgeqrnwihjpbh9mte.jpg)
Sulphur Bank Mine - Warning Sign
![Sulphur Bank Mine](https://res.cloudinary.com/hmwsi1uow/image/upload/c_scale,w_800/q_auto/v1433838955/zhwhfjdyb8gahivlbhhh.jpg)
Sulphur Bank Mine
![Sulphur Bank Mine](https://res.cloudinary.com/hmwsi1uow/image/upload/c_scale,w_800/q_auto/v1433838956/lckir5s2pozdks6pag4b.jpg)
Sulphur Bank Mine