The un-amended tailings medium that was revegetated was highly saline and initially considered toxic to plants.

As part of the Manibridge Mine Revegetation, NPS conducted an initial inventory of vegetation on-site and in the surrounding area, and performed analysis and evaluation of soil (tailings) samples. A series of greenhouse studies and field trials were designed, installed, conducted, and the data was analyzed to evaluate re-vegetation options. Successful establishment of permanent vegetation was realized on the tailings area.