Geologic Map of the Superior Quadrangle, Pinal County, Arizona
Peterson, D.W. 1969. Geologic Map of the Superior Quadrangle, Pinal County, Arizona: US. Geological Survey Geologic Quadrangle Map GQ-818, 1 sheet, scale 1:24,000.
Draft EIS Released
The Draft Environmental Impact Statement (DEIS) for the Resolution Copper Project and Land Exchange is now available for review under the 'EIS Info' tab.
Comment on DEIS
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