- Mattson B. and M. Holtby. Geochemical Assessment of The Silver Standard Mine. Presented at the 1999 workshop. - KEYWORDS: drainage chemistry historic Silver Standard tailings underground 
 
- Logue C., I. Bruce and M. Holtby. Segregation of ARD Tailings at the Duthie Mine. Presented at the 1999 workshop. - KEYWORDS: diversion Duthie health and safety historic hydrology spill tailings