Calumet is a former mining town founded in 1904, near the portal of the Calumet Coal Mine complex. Calumet is now a ghost town in Huerfano County, Colorado, United States, northwest of Walsenburg. One of the mines, Calumet No. 2, was briefly owned by Henry J. Kaiser and maintained by Kaiser Steel between 1924 and 1971. Although small even for an underground coal mine, in 1961, the Calumet Mine was the county's leading producer.