I found out those tall structures were smoke stacks used in the smelting process of a mining company.

https://www.copperarea.com/pages/dudley ... d-history/

"Later, another mining operation, Kennecott Copper Company, also built smelting facilities in Hayden expanding the area. That company is now owned by ASARCO. The old Kennecott smoke stack still stands behind the entrance to the plant."