Scope and Contents Calumet mine, east-west vertical section on muscatine limestone below 1200 level (1955) Calumet mine, plan and longitudinal projection 2300 to 2500 levels muscatine showing ore faces and reserves (1958) Calumet mine, east-west vertical projection on muscatine limestone (1955) Calumet surface, contour interval 50’ (1947) Calumet mine, plan and...