Before the pandemic brought everyday life to a halt, Joe Kiele supported himself through the industry that dominates Nevada’s economy. He waited tables at a steakhouse inside a casino in Reno.Four years later, Mr. Kiele, 49, remains in Reno, yet he now spends his workday inside a factory. In place of worrying about the doneness of a customer’s rib-eye, he trains people on the proper handling of industrial chemicals.His employer, Redwood Materials, is constructing an enormous complex across a lonely stretch of desert. There, the company has begun recycling batteries harvested from discarded smartphones and other electronics. It extracts critical minerals like nickel, lithium, copper and cobalt, and uses them to manufacture components for electric vehicle batteries.Not coincidentally, the pl...