Lower gold grades cause drop in Newcrest shares

Non-toxic amino acid has the potential to replace hazardous chemicals like cyanide in mineral extraction processes, Curtin professor says.

A new report details subpar investor returns in the mining industry over the last decade, particularly big cap diversified companies which have not adapted to new realities.

Speculators have reduced net-long positions by 3.6%.

Nine drill rigs are working a 30,000-35,000 metre program, with results feeding into future resource estimates.