Mine Maps, Bertha Mineral Company Austinville mine 4th level map , AL_MP000312, from New Jersey Zinc Company Historic Maps; topic area is 'Mine Maps'. The location is Austinville mine area (precise). The image was scanned from a paper file as part of the USGS NGGDPP deliverable for 2018-2019. The author is Bertha Mineral 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_MP000312.pdf. Additional information: Detail Geological map, 4th level 12-26, Austinville mine