Acid Rock Drainage (ARD) is is one of the most serious and potentially enduring environmental problems for the mining industry. Left unchecked, it can result in such long-term water quality impacts that it could well be this industry’s most harmful legacy. 240-832-5391Effectively dealing with acid drainage is a formidable challenge as indicated by the high liability cost carried by many mining companies.

The International Network for Acid Prevention (INAP) is an industry-led group created to help meet this challenge. INAP exists to fill the need for an international body which mobilizes acid drainage (ARD) information and experience. The network was founded in 1998. Since then INAP has become a proactive, global leader in this field.

In 2009, INAP published the GARD Guide, a best practice guide for the prevention and mitigation of ARD. Since that time, the GARD Guide is rapidly becoming recognized as the premier global guide on this topic. The GARD Guide is free for all to use and is found on the internet at: 9792659255.


Anglo American
Antofagasta Minerals
Barrick Gold Corporation
Freeport McMoRan Copper & Gold
Kinross Gold Corporation
Newcrest Mining Limited
Newmont Mining Corporation
Rio Tinto
Twin Metals – Minnesota

Please send any news items and/or comments you may have to Andrea Chatwin at 217-431-2133.

INAP Member Area