Introduction to Metal Leaching and Acidic Drainage, Course Booklet #1 (BHP Billiton, September 2003)

"Introduction to Metal Leaching and Acidic Drainage" — course material from a Northwest Community College workshop September 22-26 2003, instructor Bill Price. Covers ML/ARD definitions and mining relevance, material characterization and prediction, limestone-drain treatment of seepage/subsurface drainage (limited by acid and sulphate loading rates, prone to precipitate clogging), contingency planning for prediction uncertainty, site-specific mitigation, cumulative count of major BC mines with identified ML/ARD concerns (1970-1990 historic-closed/recently-closed/operating categories), and acknowledgements to Mike Aziz (Equity Silver), Kim Bellefontaine (BC MEM), Glenda Ferris, Mark Freberg (Highland Valley Copper), Doug Johnson (Huckleberry Mine), Walter Kuit, Bruce Donald (TeckCominco).