Terry E. Ackman

• A method to reduce surface water infiltration into underground mines
• Beneficial disposal of fly ash in inactive surface mines
• In-line aeration and treatment of acid mine drainage
• Locating and abating sources of acid mine drainage at reclaimed strip mines
• Scale inhibitors and slow-release polymers for mine water treatment systems
• Sludge disposal from acid mine drainage treatment
• Stream sealing over an active longwall panel