Airborne Reconnaissance Project, Ruby Range and Sweetwater Basin, Montana (open access)

Airborne Reconnaissance Project, Ruby Range and Sweetwater Basin, Montana

Abstract: A low-level airborne radioactivity survey of parts of Beaverhead and Madison Counties in southwestern Montana was undertaken from June 6 to October 14, 1955. Flying centered around the Ruby Range-Sweetwater Basin area and concentrated on the Precambrian metamorphic complex and Tertiary lake-bed sediments. No commercial uranium deposits were discovered, and no extensions were found of the few known small occurrences. Five areas of high background detected through the survey were investigated on the ground.
Date: April 1958
Creator: Pruitt, Robert G., Jr. & Magleby, Dan N.
System: The UNT Digital Library
Preliminary report on geology of the phosphate deposits in the Centennial Range, Montana-Idaho (open access)

Preliminary report on geology of the phosphate deposits in the Centennial Range, Montana-Idaho

A preliminary report on the geology of the phosphate deposits located in the Centennial Range in Montana and Idaho.
Date: May 1953
Creator: Honkala, Fred S.
System: The UNT Digital Library