True North Copper (ASX:TNC) completed its drilling program at the Great Australia Mine complex, within the Cloncurry project in Queensland, according to a Tuesday filing with the Australian bourse.

The program included 17 reverse circulation holes for 3,450 meters, with assay results expected later this month, the filing said.

Meanwhile, a drill rig has arrived and started drilling at Mt Oxide on an 8,000-meter program over the next two months, according to the filing.

Shares were down 5% in morning trade on Tuesday.