This may help? A new technology for gold analysis. http://www.manmonthly.com.au/news/csiros-new-x-ray-technology-revolutionising-gold-analysis-system/
Week 46 Wrap: Copper hits 2mth low as Trump threatens net zero pace; US rally fades; HotCopper’s picks
AN1 CuFe sells its Crossroads gold royalty to Northern Star for $4M cash; says better than waiting for mine launch