A son of the late Silver Valley mining magnate Harry Magnuson is suing three siblings for allegedly writing him out of their mother’s will and misusing money from the family’s trust account. Harry Magnuson died in 2009 at age 85, leaving behind a large fortune in mining companies, banks, hotels and shopping malls throughout the Inland Northwest. He’s often credited with revitalizing the town of Wallace, Idaho, and helping save Gonzaga University during financial struggles in the 1970s.