This collection consists of technical plans and details of the Deloro mining processes, labour relations and union papers, medical information concerning arsenic poisoning, historical material regarding Deloro and the village of Marmora, maps, and plant photographs, layouts, and site plans.

This fonds consists of miscellaneous personal documents relating to Gilbert Monture, including his family tree and a copy of his birth certificate. Also included are various speeches and articles by Monture, correspondence ranging from 1912-1983, newspaper clippings, miscellaneous photographs, materials relating to Pauline Johnson, correspondence and minutes relating to the Canadian Correction Association project "Indians and the Law", and documents regarding an exhibit at the Indian Hall of Fame, Canadian National Exhibition.

Collection consists of employee records, plant and engineering operations, and photographs of Deloro village and the Deloro mining and smelting site.