All the stages of a mine’s life cycle require knowledge of the environmental impacts based on adequate expertise. One of GTK’s strengths is in having a total view of geology. It allows for reliable assessment of the environmental impacts of mining. Forecasting changes, on the other hand, helps in controlling and minimising hazardous impacts. Knowledge of the natural changes and condition of soil, groundwater, and lake and stream sediments before commencing mining operations provide a solid basis for GTK’s environmental reports and transparent and open impact and risk assessment.