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breccia pipes

Sinkhole in Kaibab Limestone near Citadel Ruin
Hunting for Sinkholes on the Walhalla Plateau, northern Arizona
Minerals & Mining
Outreach
 - 22 June 2021
LiDAR data can improve sinkhole identification on the densely forested Walhalla Plateau of northern Arizona.
Bill Chenoweth's uranium reports - AZ, CO, NM, UT
Minerals & Mining
News
 - 21 August 2019
Between 1983 and 2018, Bill Chenoweth published ~ 150 uranium reports for sites in the southwestern US.
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