The Aurora Mine is located in the historic Aurora mining district of the eastern Sierra Nevada Mountain Range in Nevada, USA. Aurora recently, with the support of Tierra Group completed a Minor Modification to the Mine’s Water Pollution Control Permit (WPCP) to recommence operation of the Mine’s mill and allow the processing of historical tailings from Tailings Storage Facility 1 (TSF1). The reprocessed mill tailings will be deposited in Tailings Storage Facility 2 (TSF2) which is a fully lined tailings facility commissioned in 2012. Both tailings facilities are comprised of a jurisdictional tailings dam. Tierra Group serves as the Engineer of Record for both dams. Modifications to the WPCP designed by Tierra Group also included a new concrete containment pad, relining of several ponds, and preparation of a revised closure plan for TSF1.
Tailings management at Aurora is unique and challenging due to its high elevation (7,000 feet amsl) in a high seismic region with a relatively arid climate that experiences snowfall during winter months. As Engineer of Record, Tierra Group provides engineering consultancy, design and construction related engineering services for both of Aurora’s TSFs.