History Belt was home to Montana's first coal mine. It supplied fuel to Fort Benton. During the coal boom the town was referred to as "Little Pittsburgh", "Coal Banks", or "Black Diamond City". The post office opened on February 2, 1885, with Eugene Clingan as postmaster.
History Belt was home to Montana's first coal mine. It supplied fuel to Fort Benton. During the coal boom the town was referred to as "Little Pittsburgh", "Coal Banks", or "Black Diamond City". The post office opened on February 2, 1885, with Eugene Clingan as postmaster.