SYDNEY -- Unrest in New Caledonia has compounded a crisis in the nickel industry of the French overseas territory, casting uncertainty over mining group Glencore's attempt to divest from a major smelter there.

A worker walks past the Koniambo Nickel SAS (KNS) Vavouto site, near Kone on New Caledonia on Feb. 28, following the suspension of operations. © AFP/Jiji
Riots and questions over territory's stability buoy prices but market glut remains