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2020 Year in Review

Director’s Message 2020 was one of the most unusual years in the long history of the Wisconsin Geological and Natural History Survey. January began normally, with WGNHS staff involved primarily in office projects and participating in the normal sequence of winter professional me
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Frac sand: How is it mined?

Steps of a typical frac sand mining operation This aerial photograph is numbered in the order steps occur, from start to finish. Each step is described below. While individual mine operations may handle various steps slightly differently, the basic order remains the same. 1. Remove ve
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More data sets

Geologic logs Detailed descriptions of drill cuttings. Rock properties—porosity and density Porosity and density of rocks explained. Includes equations and distribution data for dolomite, shale, and sandstone plus measurements from Wisconsin’s aquifers and aquitards. TillPro Dat
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History of the Survey: Part 2

M.E. Ostrom, 1988 Originally published in The State Geological Surveys: A History © 1988 Association of American State Geologists (revised 1996) The Sixth Survey: The Geological and Natural History Survey, 1897–present The shift in public attitude toward greater social and environment
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History of the Survey: Part 1

M.E. Ostrom, 1988 Originally published in The State Geological Surveys: A History © 1988 Association of American State Geologists (revised 1996)   End of WGNHS History, Part 1. Part 2 finishes the story.
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