Aris Grapples With Collapse at Affiliated Colombia Gold Mine (1)

A Canadian company’s novel approach to informal mining is being put to the test after more than 20 workers were trapped by a collapse at a gold mine in Colombia.

The miners are in good health and are expected to be freed soon, according to Colombian mining authority ANM and Vancouver-based Aris Mining Corp. They’ve been trapped since a collapse at the mine’s main access at about 11 a.m. local time Monday.

The accident took place at La Reliquia, which is one of the previously informal operations within Aris’ tenements in Segovia, Antioquia department. Aris shares fell as much as ...