Lost Mines of Southern California: Kelsey Annex / OK Mine
The Kelsey Annex Mine, also known as the OK Mine or Southern Extension is Kelsey Mine's long lost little brother. Very few people have seen this mine, or even know of its existence. Unlike the Kelsey, the Kelsey Annex was primarily mined for gold, not silver. Located in a seemingly impossible location, this mine was owned by Henry C. Kelsey in the late 1800s.
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