Geotechnical issues downgrade production at Caribou mine
According to an October 2018 press release, “challenging hanging wall rock mass conditions” have forced Trevali Mining Corporation to slow zinc and lead production at its Caribou mine in Bathurst, New Brunswick.
A hanging wall rock mass is found in mines with steeply dipping or irregular ore zones where cut and fill mining methods are used. The ore is mined in horizontal or slightly inclined slices, and then filled with waste rock, sand or mine tailings. Trevali says it was positioned to meet its original 2018 zinc and lead production targets but made several key operational changes to ensure the safety of its employees, equipment and to maintain production in 2019 and beyond.
“It is incredibly disappointing … however this was a necessary step in order to ensure the safety of our workforce and enhance the long-term economics of the mine,” Trevali’s president and CEO Mark Cruise said in the press release.
The company is currently undergoing a strategic review of Caribou’s mine production. Steve Stakiw, Trevali’s vice-president of investor relations and corporate communications, said in an email the company won’t be commenting on the review or the mine’s production issues until the review is finished.