Historical Marker · No. 428

Sulphur Bank Mine

Clearlake Oaks, Lake County · California
Erected by California Centennials Commission; base furnished by the County of Lake, 1950

The bronze that stood on this boulder counted flasks and wars, and it has since gone missing. It never mentioned the Elem Pomo, whose community sits on the shore beside the pit and whose people worked the mine, or the Chinese crews who did most of the hot underground work. In 1880 the company's president, Tiburcio Parrott, was arrested for refusing to fire them under the new state constitution, and a federal court struck the ban down. The EPA listed the mine as a Superfund site in 1990 and has since scraped mercury waste from Elem yards.

What the plaque says

Sulphur Bank Mine This sulphur mine also produced quicksilver and became one of most noted producers in world. First worked for sulphur in 1865 and in four years produced total of 2,000,000 pounds. Reopened and developed for quicksilver in 1873 and credited with total output of 92,400 flasks. Was important producer World War I and II. State Registered Landmark No. 428 Tablet placed by California Centennials Commission. Base furnished by the County of Lake Dedicated May 30, 1950

Where it stands

39.02013, -122.64875 · Directions

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