ML/ARD Prediction


    MEA has conducted static and kinetic geochemical testing programs for Wolverine, a polymetallic deposit located in the Yukon Territory.  Static geochemical testing was undertaken and tailings samples selected to undergo laboratory kinetic testing by way of humidity cell tests.  The program has been on-going for over 5 years.  MEA currently manages the humidity cell database and provides periodic updates to Yukon Zinc regarding the estimated time to onset of ARD and the magnitude of metal leaching.

  These rates provided in these updates are critical to confirming the management decisions that are required  to successfully operate the tailings facility with minimal environmental impact.   MEA’s work with Myra Falls, an operational polymetallic mine on Vancouver Island, British Columbia has included assessing the results of over 6 years of kinetic testing data.  MEA currently:

  1. Bullet Manages the humidity cell database;

  2. BulletProvides periodic updates as to the time to onset of ARD and the predicted ML rates;

  3. BulletRecommends  cells requiring decommissioning; and

  4. BulletDeveloped a decommissioning testing program and will analyze the data from the decommissioning work including mineralogy reports, leach extraction testing data and post-test ABA and metals data to close out the humidity cell program.


   Kemess North is a Cu/Au deposit located in Northern British Columbia.  MEA personnel have been involved with the project from it’s inception. The program involved an extensive static and kinetic testing program which included over 4 years of data.  Most recently MEA provided a final summary of the kinetic testing results summarizing the time to onset and magnitude of metal leaching.  Recommendations were made as to which cells should be decommissioned and which should be maintained