The Bunker Hill Mine (also known as the Inyo Bunker Hill) was worked for lead, silver, and zinc in the early 20th century. The ore mined during the 1920s and '30s was particularly rich, containing 30% to 60% lead, 33 ounces of silver per ton, and 0.1 ounces of gold per ton. Production ceased in 1937, but it is evident that the camp underwent renovations in the 1950s.