A second and better capitalised attempt to mine this deposit was begun in 1907 by the Missouri Iron Company, with a railroad connection built in 1910 and a new ore processing plant completed in 1913 with a capacity of 350 to 400 tons per day. The total investment was estimated at $225,000, and two patents were issued for the machinery in the ore processing plant. This mine became the principal mine of the new Mississippi Valley Iron Company of St. Louis, Missouri in 1916.