Basically when they applied for jobs, they were given applications listing who would be living with them, and they accepted families with elderly parents on a case by case basis, as long as they were still alert/oriented and mobile even if they needed a wheelchair. They didn't allow any elderly that should be in a nursing home to live there, since they weren't set up to provide a nursing home. My guess was anyone with an elderly parent that had to be in a nursing facility had the funds to put them in a nicer facility since they had lower overhead living at the mine. Either way - their parents benefitted.
Fleataxi