From the SME 2009 Conference CD Preprints is Application of Best Available Technology to Reclamation Design and Integration with Mine Planning by H.J. Hutson of BRS Inc. in Riverton, Wyoming.   

The paper starts thus:

BRS, Inc has utilized Carlson’s Natural Regrade (TM) software to design the reclamation and stabilization of abandoned open pit uranium mine spoils, AML Project 16N, located in the Gas Hills Uranium District in Central Wyoming.  This work was completed for the State of Wyoming’s Abandoned Mine Land Program (AML) on pre-SMCRA (Surface Mining Reclamation and Control Act) sites for which no reclamation obligation existed.  The project successfully stabilized an eroding spoil dump, enhanced the local view shed, created habitat diversity, and provided a significant source of fill material for open pit highwall hazard mitigation efforts.  Additionally, the project served to evaluate innovative reclamation design methods, engineering software, and grade control technology. 

The part I liked about the work they did includes the fact that the software enables one to design an erosionally stable, topographically diverse, natural appearing landform.  Thus instead of the usual flat slope, we get meandering gullies and ridges that look like nature did it.  As the paper puts it:

Key aspects of the final surface include slopes which transition from convex to concave profiles, concave drainage profiles, a high degree of dissection of the surface by multiple small drainage basins, and meandering channel alignments to increase length with a corresponding decrease in overall gradient.

The author notes that it was difficult to construct such profiles, but he says it was not as difficult as anticipated.  And that is good news, for I truly believe that what they did is the right thing to do at other tailings impoundment closure projects.