In 1945, EP Minerals acquired the diatomaceous earth deposits 20 miles east of Reno, Nevada in what is known today as Clark, Nevada. Clark mines and manufactures diatomaceous earth (DE). Today, the Clark plant produces soil amendments, absorbents and carriers, as well as natural filter aids and functional additives. A flash dryer process is utilized in producing natural DE powders in support of the functional additive and natural insecticide/animal feed markets. The plant has one rotary kiln, two flash dry lines for natural DE powders and a DE surface treatment line.
The Clark facility has an annual capacity of approximately 70,000 tons and utilizes DE ore from its surface mining, natural gas and electricity. U.S. Silica acquired the Clark facility when EP Minerals joined our company in 2018.