A walk around a P&H Model-206 Corduroy Power Shovel used in a 1929-1935 mining operation
alt="A walk around 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." border="0">
A walk around 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.