Nutrients and Other Limiting Factors for Trees Established on Reconstructed Soils Scott Chang, Min Duan and Jason House Department of Renewable Resources University of Alberta -content/uploads/2013/03/Gold-mine-in-China-Fall- Twin Creeks gold mine, Nevada en. The Mining Association of Canada Meadowbank gold mine, Nunavut Ekati diamond mine, Yellowknife ~ 82 km2 under active reclamation >12 million trees planted for oil sands reclamation 80% of the oil sands accessible by in situ methods only .ca/ The Oil Sands Resources in Alberta Opencast Mining and Reclamation of Disturbed Land .org Alberta: Environmental Protection and Enhancement Act (EPEA) United States: Surface Mining Control and Reclamation Act (SMCRA) of 1997