A mix of political populism, higher commodity prices and the expectation electrification will spur demand for raw materials has led governments to change the rules for miners operating in their countries.
Cross-border concerns about mineral exploration and logging in British Columbia's Skagit River watershed may put a long-simmering campaign to close a hole in the middle of two provincial parks back on the front burner.
The deal was largely in line with current spot treatment charges in China, which have soared to $240 a tonne from a low of $12.50 at the start of 2018.
The companies say that their OptiMine Analytics technology is particularly useful when it comes to dealing with failing equipment and regular maintenance.