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Exploration of O'Jack Mining Co. zinc and lead deposits, Jasper County, Missouri
Exploration for zinc and lead ore, Phelps lease, Jasper County, Mo.
Churn drilling at the Capital and Greenland zinc mines, Lawrence County, Mo.
Investigation of South Carthage zinc-lead deposit, Jasper County, Mo.
Investigation of Lone Elm zinc-lead deposit, Jasper County, Mo.
Investigation of Rush Creek zinc district, Marion County, Ark.
Investigation of North Empire zinc-lead deposit, Cherokee County, Kans.
Investigation of Canyon Diggings zinc-lead deposit, Newton County, Mo.