All Presentations (pdf)

8:15 Brent Means
10:10 James J. Gusek
12:40 Jonathan M. Dietz
2:15 Kimberly R. Weaver
4:00 Brent Means

8:45 Robert Kleinmann
9:15 Brent Means
9:30 James J. Gusek
10:00 Glenn C. Miller
10:30 Linda Ann Figueroa
12:40 Art Rose
1:10 Charles A. Cravotta III
1:40 Danielle M C Huminicki
2:50 Bernard Aube
3:20 Timothy K. Tsukamoto
3:50 Bradley R. Shultz
4:20 Kimberly R. Weaver


8:00 Linda Ann Figueroa
8:30 John Senko
9:00 Song Jin
10:10 Jonathan M. Dietz
10:40 Daryle H. Fish
12:40 John Chermak
1:10 Griff Wyatt
1:40 Dan Mueller
2:50 Sean C. Muller
3:20 Jack Adams
3:50 Roger Bason
3:50 Mark B. Carew

8:00 Rep. John E. Peterson
8:30 Scott Sibley
9:00 Charles A. Cravotta III
9:30 Michael R. Silsbee
10:30 Lykourgos Iordanidis
11:00 Mark Conedera
11:30 Barry Scheetz
1:25 William Benusa
1:55 Mike Sawayda
2:25 Susan J. Tewalt
3:25 Robert S. Hedin
3:55 Chad J. Penn

4:25 Ron Neufeld

Tuesday 9:30 James J. Gusek, Senior Project Manager,Golder Associates, Inc. Lakewood, CO

Case Studies of Bioreactors


James J. Gusek, Senior Project Manager
Golder Associates, Inc.
Lakewood, Colorado


There are basically two kinds of biological passive treatment cells for treating mine drainage. Aerobic Cells containing cattails and other plants are typically applicable to coal mine drainage where iron and manganese and mild acidity are problematic. Sulfate Reducing Bioreactors (SRBRs) are typically applicable to metal or coal mine drainage with high acidity and/or a wide range of metals. Most passive treatment systems employ one or both of these cell types. The track record of aerobic systems in treating coal mine drainage is impressive, especially in the eastern coalfields. SRBR’s have tremendous potential at metal mines and especially acidic coal mines but have not seen as wide an application.

This paper presents the rudiments of SRBR design and operation in treating mine drainage, including the ability to work in cold, high altitude environments; handle high flow rates of mildly affected ARD in moderate acreage footprints; treat low pH/acid drainage with a wide range of metals and anions including uranium, selenium, and sulfate; accept acid drainage containing dissolved aluminum without clogging with hydroxide sludge.

SRBRs might not be applicable in every abandoned mine situation. A phased design program of laboratory, bench, and pilot scale testing has been shown to increase the likelihood of a successful design.



Mr. James J. Gusek is a Senior Project Manager with Golder Associates, Inc. based in Lakewood, Colorado and a registered professional engineer. He specializes in mine closure, mine land reclamation and design of passive treatment systems for mine influenced water. Since 1987, his work with acid rock drainage prevention and passive water treatment systems has included over three dozen projects throughout the U.S. and in England, Zambia, Malaysia, Fiji, Slovakia, Peru, Brazil, and Chile. He has published dozens of papers about passive treatment of mine influenced water, in particular acid rock drainage, and is a co-chair of the Metal Mining Sector of the Acid Drainage Technology Initiative. He graduated from the Colorado School of Mines in 1973 with a B.S. in Mining Engineering.