Fonds consists of the following series: Annual Environmental Reports, 1971-98; ICM staff environmental reports, 1970-2000; University reports, 1970-2000; Consultants' reports, 1970-99; Government reports, 1970-97; and Other reports, 1970-2000. These reports document the history of the mine, as well as the monitoring information, problems, and solutions it dealt with over the years. The first two series are arranged by date. The remaining series are arranged alphabetically by author. The report files often also include scientific articles, newspaper clippings, letters and related documentation.