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Show HOLDEN CO. TO BUILD EXPERIMENTAL PLANT ' The Holden Mining & Milling company is erecting a fifty-ton experimental mill on its property at Tuscarora, Nev. . The plant will start work soon, and a large mill Is to be installed as soon as a suitable suit-able process for ore treatment has been determined. Developments are principally restricted at present to the Nevada Queen mine-, formerly a large silver-gold yielder. C. C. Griggs Is general manager. The Koso group has been purchased by F. L. llober and associates of Winnemucca for Si 0.000 and a stock consideration. The property has been sufficiently worked to oxpowi a strong vein of ore said to be of shipping grade. Extensive work is to start nt once. ' |