Sandy Keith retires as Minnesota's Chief Justice tomorrow (Thursday). The Rochester native is one of the few who've helped shape Minnesota from all three branches of government--as state senator, lieutenant governor and supreme court justice. Minnesota Public Radio's Elizabeth Stawicki has this profile of the outgoing chief justice. In 1946 Sandy Keith tried to shake off the dirt from what he called the hick town of Rochester and move on to bigger and better things. Keith, the son of a mayo clinic physician, headed east and obtained degrees from Amherst and Yale. After a stint as a Marine lieutenant during the Korean war, Keith returned to Rochester taking a job as an attorney in Mayo Clinic's legal department. His boss was Harry Blackmun who would later become a U-S Supreme Court Justice. Politics was always a topic of discussion in his parents' household but Keith's interest flared in the 1950's when he won a seat in the state senate. Don