Investigation and inventory of abandoned underground mines in Columbiana, Mahoning, and Trumbull counties, Ohio

Abstract

Originally issued: May 1980; with added introduction dated: Jan. 5, 2012.; Includes bibliographical references (p. 22) and index.; Harvested from the web on 3/8/12[Primary report] -- Columbiana County abandoned underground mine data sheets -- Mahoning County abandoned underground mine data sheets -- Trumbull County abandoned underground mine data sheets -- Carroll ... [Jefferson, Portage, and Stark counties] abandoned underground mine data sheets