From abstract: Metatorbernite and bassetite are present in altered carbonaceous and quartzose slate of probable upper Huronian age. The slate is part of a small inlier of Huronian rocks between the Gwinn iron district to the southeast and the Marquette iron district to the northwest, Marquette County, Mich. Samples taken from a shallow trench, which was dug in the area of highest radioactivity, contained as much as 0.68 percent uranium. A 4-foot channel sample of the slate contained 0.036 percent uranium.

This issue brief discusses pay secrecy policies that nearly half of workers nationally reported that they were either contractually forbidden or strongly discouraged from discussing their pay with their colleagues. Includes a listing of state laws that protect employees in discussing pay and compensation.

This report follows the study of uranium and thorium potential of the Precambrian rocks of northern Wisconsin and the western half of the Upper Peninsula of Michigan.

From abstract: Results of a reconnaissance geochemical survey of the Iron Mountain Quadrangle, Michigan; Wisconsin are reported. Field and laboratory data are presented for 479 groundwater samples, 369 stream sediment samples, and 389 stream water samples. Statistical and areal distributions of uranium and other possible uranium-related variables are displayed. A generalized geologic map of the survey area is provided, and pertinent geologic factors which may be of significance in evaluating the potential for uranium mineralization are briefly discussed.

Discussing water samples collected during a reconnaissance study for uranium, and the analysis of the samples.