From the G&M article:

........"In recent years, Chinese companies have purchased stakes in Canadian mining interests that extract lithium, cesium, uranium and chromite, the main source of chromium – a key ingredient in stainless steel"........

A nice shout out for the Ring of Fire.

Both Wyloo and BHP have to assure Canada that they are not a threat due to their business relationships with China; vetting thru CSIS.