Image: Treadwell Mines geologic map
Size of this preview: 800 × 428 pixels. Other resolutions: 320 × 171 pixels | 1,149 × 614 pixels.
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Description: Treadwell Mines geologic map
Title: Treadwell Mines geologic map
Credit: USGS Bulletin 287, The Juneau Gold Belt, Alaska
Author: Arthur C. Spencer
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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