During the 1960s there was a huge surge in copper usage, and during this time period mine owners in Arizona began outsourcing ongoing work to general contractors to improve their facilities.
ASARCO has long been a major copper producer in Arizona. Sundt began a very long-term relationship with the company based on a series of jobs at the smelter located in Hayden, Arizona. Some of the work was deploying smelter upgrades, which reduced air pollution, and performing routine plant maintenance. Today, those projects represent early work on what is now the largest smelter in Arizona.
ASARCO Hayden-Smelter Repairs