Cooper, W. E. 1955-
International intercalibration and intercomparison program radon daughter measurements : exercise at the Twilight Mine, Uravan, CO / by W.E. Cooper and R.F. Holub. - Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1990. - 13 p. : ill. - Information circular ; 9257 . - Information circular (United States. Bureau of Mines) ; 9257 .
90001743
Mine gases--Measurement.--Colorado--Twilight Mine
Radon--Isotopes--Measurement.
International intercalibration and intercomparison program radon daughter measurements : exercise at the Twilight Mine, Uravan, CO / by W.E. Cooper and R.F. Holub. - Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1990. - 13 p. : ill. - Information circular ; 9257 . - Information circular (United States. Bureau of Mines) ; 9257 .
90001743
Mine gases--Measurement.--Colorado--Twilight Mine
Radon--Isotopes--Measurement.