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- Mining and milling operations of the Southwestern Graphite Co., Burnet County, Tex.
- Alice Zinc Mine, Ozark County, Mo.
- Churn drilling at the Capital and Greenland zinc mines, Lawrence County, Mo.
- Methods and costs of mining fluorspar from a flat-bedded deposit at Cave-In-Rock, Ill.
- Investigation of Douglas fluorite property, Pope County, Ill.
- Investigation of mica deposits at the Victory, Jack Rabbit, Rainbow, and Midas mines, Custer County, S. Dak.