Boys at special-needs treatment ranch between Nevada City and North San Juan continued their programs Sunday, largely unaffected by a bomb threat that forced evacuations at the compound a day earlier. Just before 10:40 a.m. Saturday, a man called in a threat that a bomb would go off “any minute” at one of the buildings at the Milhous Treatment Ranch, according to dispatch reports of the Nevada County Sheriff’s Office. Two of the buildings at the ranch were evacuated, affecting six kids and eight counselors, said Frank Milhous, one of the ranch’s founders, in a phone interview Sunday. Sheriff’s deputies …