Original National Coal Resources Data System (NCRDS) paper data forms compiled by the Indiana Geological Survey and submitted to the U.S. Geologial Survey. Maps are filed by 7.5-minute quadrangle name in 6 boxes; destruction date on boxes: 3/2021
Summary
Original National Coal Resources Data System (NCRDS) paper data forms compiled by the Indiana Geological Survey and submitted to the U.S. Geologial Survey. Maps are filed by 7.5-minute quadrangle name in 6 boxes; destruction date on boxes: 3/2021
Record added under the National Geological and Geophysical Data Preservation Program grant award G15AP00119 August 2015–August 2016. Record modified by Kimberly J. Cook under the NGGDPP grant award G19AP00086 July 2019–June 2020.
