Groundwater flowing from Eagle mine shows signs of high cyanide contamination, though much of the water is being contained on site.
WGC senior market strategist sees several trigger points that could prompt gold to move even higher, perhaps stirring more interest from retail investors.
Encouraged by the half-year results, the miner has raised its production guidance from Essakane and Westwood to 495,000-540,000 oz.
The precious metal has risen about 18% this year, largely on expectations the US central bank would soon deliver rate cuts.