Don't think it is Kaiser Aluminum, Rusty. The only thing they manufactured was aluminum plate, aluminum can stock, aluminum foil, etc. My father retired from their plant here after 38 years. I toured the facility several times, myself. In their heyday, they were the go to producer of aluminum, from ore to finished raw product for industries all over the world. They had a plant in Ghana, Africa. My uncle was a supervisor at that one, and helped get the plant here running after it was built. He worked for several years for them after retirement as an independent consultant. They would fly him all over to solve problems for their various plants.
If they made vises, I'm sure I would have seen one or two in this community or at least in my family.
Most notable of their products was large plates for constructing the space shuttle and it's components.