Bunker Hill Mine

The South Fork of the Coeur d'Alene River flows through Kellogg on Thursday, Nov. 29, 2018. A new water treatment plant under construction will reduce zinc and other heavy metals flowing into the river. (Kathy Plonka / The Spokesman-Review)
The K for Kellogg is photographed on Thursday, Nov. 29, 2018. Prospector Noah Kellogg discovered the lead outcropping that became the Bunker Hill Mine in 1885, and the town grew up around the mine. (Kathy Plonka / The Spokesman-Review)
Buildings from the Bunker Hill Mine site are reflected in the window of the front office in Kellogg on Thursday, Nov. 29, 2018. Efforts to restart operations at the Bunker Hill Mine are in the early stages. (Kathy Plonka / The Spokesman-Review)
The Bunker Hill Mine and Smelter Complex was once the largest employer in the Silver Valley, with about 2,200 workers. The sign is photographed in Kellogg on Thursday, Nov. 29, 2018. (Kathy Plonka / The Spokesman-Review)
The Kellogg Tunnel entrance at the Bunker Hill Mine is photographed in Kellogg on Thursday, Nov. 29, 2018. Efforts to restart operations at the Bunker Hill Mine are in the early stages. (Kathy Plonka / The Spokesman-Review)
Acid mine drainage flows out of the portal of the Bunker Hill Mine and travels by ditch to a water treatment plant operated by the U.S. Environmental Protection Agency. (Kathy Plonka / The Spokesman-Review)
The sludge impoundment area from the wastewater treatment plant is photographed in Kellogg on Thursday, Nov. 29, 2018. (Kathy Plonka / The Spokesman-Review)
The sludge disposal area from the water treatment plant is photographed in Kellogg on Thursday, Nov. 29, 2018. (Kathy Plonka / The Spokesman-Review)
The sludge disposal pond from the water treatment plant is photographed in Kellogg on Thursday, Nov. 29, 2018. (Kathy Plonka / The Spokesman-Review)
A person walks along Centennial Trail past the sludge disposal pond in Kellogg on Thursday, Nov. 29, 2018. (Kathy Plonka / The Spokesman-Review)
Construction continues on the new wastewater treatment plant in Kellogg on Thursday, Nov. 29, 2018. (Kathy Plonka / The Spokesman-Review)
Ed Moreen, project manager for the U.S. Environmental Protection Agency talks about the ongoing construction of a new wastewater treatment plant in Kellogg on Thursday, Nov. 29, 2018. (Kathy Plonka / The Spokesman-Review)
Construction continues on the new wastewater treatment plant in Kellogg on Thursday, Nov. 29, 2018. (Kathy Plonka / The Spokesman-Review)
A construction worker sprays mud polluted with heavy metals off of tires as work continues on the wastewater treatment plant in Kellogg on Thursday, Nov. 29, 2018. (Kathy Plonka / The Spokesman-Review)
The South Fork of the Coeur d'Alene River flows through Kellogg on Thursday, Nov. 29, 2018. A new water treatment facility will reduce the heavy metals in the river. (Kathy Plonka / The Spokesman-Review)
"The Patriot" sculpture, created by Kenneth Lonn, a Bunker Hill Mine employee, and dedicated to the men and women of Idaho's mining industry is photographed in Kellogg on Thursday, Nov. 29, 2018. (Kathy Plonka / The Spokesman-Review)
For nearly a century, the Bunker Hill Mine in Kellogg was the source of tremendous wealth.