Gold mines generate a large amount of waste, the majority in the form of waste rock. Waste materials also include chemical reagents packaging, and food waste. Centamin has detailed waste management plans in place to ensure all the hazardous and non-hazardous waste generated is minimised and dealt with in a safe and responsible manner.
The Sukari has an emergency response team on site, who are trained and equipped to manage emergency situations, including potential incidents related to tailings management or hazardous chemical spills.
We are committed to the highest standards of tailings management. Centamin has one active downstream tailings storage facility (“TSF 1”) at the Sukari Gold Mine in Egypt and no closed tailings facilities. Centamin has no history of tailings failures. TSF1 is regularly reviewed according to regulatory and internal requirements, and water samples taken from adjacent wells and boreholes to monitor for seepage.
Monitoring processes are in place to verify the safety of TSF 1 and these include:
- Embankment Stability monitoring with the use of piezometers, wall movement monitoring including survey prisms and wall deformation surveys
- Monitoring of groundwater levels and (TDS) Total Dissolved Solids content and environmental assessments
- Operational walkaround and observations by HSE/TSF staff
- Regular technical site based internal reviews
- Regular external technical reports fed back to site and group management with reviews and from 2019, enhanced reporting to the HSES committee of the Board of Centamin plc
The latest independent reviews confirm the integrity of TSF 1 and summarised in this report are the recommendations from the most recent reviews. In particular, the review recommended reducing the water levels on TSF 1 which can be managed given the arid environment where the TSF 1 is located through evaporation and re-use of the surface water through the plant.
Centamin is currently in the commissioning phase on a second active downstream TSF (“TSF 2”) having completed construction ahead of schedule and under budget. TSF 2 is part of the long-term strategy of the site mine plan and will extend tailings deposition to beyond 2030.
Centamin has no history of tailings failures. The Sukari Mine has a well-developed emergency action plan in the event of any potential breach. The plan is communicated to all employees and contractors and emergency drills are held regularly. The emergency response plan is also reviewed internally at least annually. Sukari has an emergency response team on-site, who are trained and equipped to manage emergency situations, including potential incidents related to tailings management or hazardous chemical spills.
NOTE. Knight Piesold prepared the initial design and construction of TSF 1 in 2008 and has most recently provided technical assessments of TSF 1, with supporting recommendations in 2020. Knight Piesold designed and constructed TSF 2. P.L. Steenkamp Pr. Eng. provided external and independent assessments of TSF 1 from 2015 to date and will continue to provide independent technical assessments of TSF 1 and, when required, TSF 2.