The business in an American state, lasting from 1873 to 1883, became one of the most noted mercury producers in the world. Eastlake in a county in the American state is located southwest of it. Eriogonum nervulosum is a flower plant found in this county.
 During the days of the first quicksilver operations of the Sulphur Bank Mine, lasting from 1873 to 1883, rapid town growth and the urgent need for civil order necessitated the building of a jail. 
 The 150 acre mine became one of the most noted mercury producers in the world. 
 It was located just southwest of the Sulphur Bank Mine 7 mi north-northwest of Lower Lake, at an elevation of 1355 feet (413 m). 
 This uncommon plant is endemic to the inland North Coast Ranges of California, where it is known from only a handful of occurrences, most of which are in Lake County. 
