Posted on July 9, 2015January 11, 20181990 Proceedings of the Illinois Mining Institute Annual Meeting Proceedings of the Illinois Mining Institute Annual Meeting – 1990 View/Download entire volume
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Posted on July 9, 2015July 9, 20151983 Proceedings of the Illinois Mining Institute Annual Meeting Proceedings of the Illinois Mining Institute Annual Meeting – 1983 View/Download entire volume
Posted on July 9, 2015July 9, 20151982 Proceedings of the Illinois Mining Institute Annual Meeting Proceedings of the Illinois Mining Institute Annual Meeting – 1982 View/Download entire volume
Posted on July 9, 2015July 9, 20151981 Proceedings of the Illinois Mining Institute Annual Meeting Proceedings of the Illinois Mining Institute Annual Meeting – 1981 View/Download entire volume
