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in creator/contributor: "Long, E.C."

open access

Rapid seepage of contaminants through the highwall of a uranium mill tailings pit. [MIGRAT]

A computer code (MIGRAT) is used to quantify the migration of moisture and multiple retarded contaminants in the unsaturated zone and assess the impact of open mine disposal of uranium mill tailings. The model is applied to a generic uranium mill tailings. The model is applied to a generic uranium mill tailings pit constructed with a clay-lined bottom and steep unlined sidewalls. The migration of a two contaminant system is modeled assuming that neither contaminant decays and only one contamina… more

Date: January 1, 1984

Creator: Pin, F.G.; Witten, A.J.; Sharp, R.D. & Long, E.C.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Two-dimensional transient far-field analysis for the excess temperature from an arbitrary source

An analytic solution is presented for the two-dimensional time-dependent advective diffusion equation governing the distribution of excess temperature in a river of uniform width, depth, and downstream flow. The solution is also applicable to a straight coastline with uniform longshore flow. Exact solutions are obtained for a point heat source and a particular line heat source, while an approximate representation is given for an arbitrary time-varying heat source. These solutions are incorporat… more

Date: July 1, 1978

Creator: Witten, A.J. & Long, E.C.

Item Type: Report