Closure, Remediation & Management of Precious Metals Heap Leach Facilities '99

Table of Contents

I. PLANNING, HYDROLOGY AND GEOCHEMISTRY.

Hydrodynamics and Solute Transport In Heap Leach Mining
David L. Decker And Scott W. Tyler

Numerical Modeling of Heap Leach, Tailings and Waste Rock Facility Cover Alternatives
Brad Hart and William Lassetter.

Design and Evaluation of Engineered Soil Covers for Infiltration Control in Heap Leach Closure
Peter E. Kowalewski, P.E.

Precious Metals Heap Leach Facilities Design, Closure and Reclamation
Carl J. Burkhalter, P.E., Richard H. Allison P.E., and Brett F. Flint, P.E.

Geochemistry of Closed heaps: A Rationale for Drainage Water Quality
Glenn C. Miller, Cynthia Hoonhout, W. Watkins Miller, and Mary M. Miller.

The Relationship Between Waste Rock Geochemistry, Age and Reactivity
Andy Davis, Ph.D., S. Helgen, A. Tisdale, and Cindi Byrns.

Cyanide Behavior in heap Leach Circuits: A New Perspective from Stable Carbon-and Nitrogen-Isotope Data
Craig A. Johnson, David J. Grimes, and Robert O. Rye.

Accuracy of Cyanide Analysis: Lessons from On-Site Analyses in the USGS Mobile Geochemical Laboratory, and Implications for Heap Leach Regulatory and Closure Issues
David J. Grimes, Craig A. Johnson, and Robert O. Rye.

II. TREATMENT AND SURFACE RECLAMATION

Mine Revegetation in Nevada: The State of the Art in the Arid Zone
Christopher Ross.

Options to Revegetate Neutralized Heap Leach Material
Roy Cellan and Alan Cox, Leslie Burnside, and Gene McClelland.

Design Alternatives for Handling Residual Heap Effluent
Barry L. Carlson, P.E.

Anoxic Biotreatment Cell (ABC) for removal of Nitrate and Selenium from Mining Effluent Waters
M.A. Reinsel, Ph.D., P.E. and P.D. Plumb, P.E.

Nutrient Enhanced Passive Bioreactor for Treatment of Acid Mine Drainage
T.K. Tsukamoto and G. C. Miller.

Application of the Biocyanide Process for Treatment of Acid Mine Drainage
Suzzann Nordwick, Marietta Canty, Randy Hiebert, and Leslie Thompson.

Integrated Treatment Design for Heap Effluents
James M. Harrington and David B. Levy.

Preventing Acid Rock Drainage Using Dupont’s Surface Passivation Technology
Pankaj. C. Kapadia, Jim Arnold, Gary P. Marshall, and Jeffrey S. Thompson.

III. CASE STUDIES

The Casino / Winrock Precious Metals Heap Leach Facility – Anatomy of a Successful Closure Project.
William Lassetter, Mike Reed, and Steve Boyce.

Black Pine Mine Heap Leach Closure Pre-Closure Planning and First Year Closure Activities
Valerie Sawyer, C.Crellin Scott, and Paul Comba.

Geotechnical and Hydrogeochemical Investigations to Support Closure of Inactive Heap Leach and Tailings Facilities, Cortex Gold Mines, Lander County, Nevada.
Jim Collard, Chuck Zimmerman, John Risher, and William Lassetter.