Subject: Mineral ledge and tunnel into Level 7, Horseshoe Mesa copper mine, Grandview.
Date: ca. 1907
Collection: Grand Canyon National Park (No. 9829).
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Horseshoe Mesa, ca. 1907
Subject: Mineral ledge and tunnel into Level 7, Horseshoe Mesa copper mine, Grandview.
Date: ca. 1907
Collection: Grand Canyon National Park (No. 9829).