The Valentine mine (No. 63, pl. 30) is the southern-most of the group accessible by Porter Wash and lies about 6 miles south of Goodsprings, in the Goodsprings Mining District, in Clark County. It is owned by the Valentine Mining Company and was worked intermittently until 1910. The principal exploration is a shaft 310 feet deep , inclined 36 degrees, from the bottom of which there is a crosscut 300 feet west and some drifts. There are also three short tunnels about 300 feet north of this shaft.

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