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A P&H Model-206 Corduroy Power Shovel used in Tapo Alto Shell & Fertilizer Company's 1929-1935 coquina limestone mining operation on Tapo Alto peak, near Simi Valley, California. December 7, 2023.


A P&H Model-206 Corduroy Power Shovel used in Tapo Alto Shell & Fertilizer Company's 1929-1935 coquina limestone mining operation on Tapo Alto peak, near Simi Valley, California. December 7, 2023.