M.A. Clynne J. M. Thompson V.L. Thurmond Richard C. Erd N.L. Nehring Karen A. Smith D.R. Tweeton G.R. Anderson W.H. Engelmann P. J. Lamothe J. L. Seeley Robert W. Potter 1979 application/pdf 10.3133/ofr791144 en U.S. Geological Survey, Results of the chemical monitoring of the in-situ leaching of a South Texas uranium orebody reports