Original vintage mining magazine ad for ROBERTS AND SCHAEFER COMPANY of Chicago, IL.  Progress of the Past Year in the Coal Mining Industry.  RandS Equipment represented by installations at Berwind White Coal Mining Company, Pittsburgh Coal Company, Hillman Coal and Coke Company, Pittsburgh Terminal Coal Corporation, Crozer Coal and Coke Company, Algoma Coal and Coke Company, and Ohio Collieries Company.   Old two-page 1928 coal mining equipment industry advertisement.  Would display beautifully matted and framed!

Each page size approximate 9 x 12 inches, total size approximate 18 x 12 inches.