Mine Maps, Hardwick Mine, Bradley county, TN , AL_MP000082, from New Jersey Zinc Company Historic Maps; topic area is 'Mine Maps'. The location is Bradley Co., TN (estimated). The image was scanned from a paper file as part of the USGS NGGDPP deliverable for 2018-2019. The author is New Jersey Zinc Company. The paper file was dated . Physical Storage: Room 2, Austinville Limestone Company, Newtown Church Road, Austinville, VA 24312. Digital Storage: \\NG00250050\DGMR\Collections\NEW_JERSEY_ZINC\MineMaps\AL_MP000082.pdf. Additional information: