Canadian miner Three Valley Copper, has suspended operations at its Minera Tres Valles (MTV) mine near Salamanca, Chile.

The cause of the suspension was a significant underperformance of MTV’s open-pit operation. Three Valley Copper had previously believed that the underperformance was temporary, but a continuation of lower grade ore deliveries called into question the future economics of the mine, leading to the decision to suspend operations.

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

Three Valley Copper has also temporarily suspended its exploration program and suspended certain sustaining and expansion capital expenditures to preserve liquidity further. 

Therefore, the company has decided to suspend operations temporarily and has undertaken to demobilise its contractors and place the Don Gabriel open pit, part of MTV and its primary ore source, into care and maintenance until management and the technical teams have completed their analysis of MTV and alternatives to the current mine plan.

The mine

Three Valley Copper, headquartered in Toronto, Canada, focuses on growing copper production. Its primary asset is MTV. Located in Salamanca, Chile, MTV is 95.1% owned by the company, and includes the Minera Tres Valles mining complex and its 46,000 hectares of exploratory lands.

The company’s revised operating guidance for 2021 was to produce between 4,500 and 5,500 tonnes of copper cathodes. Actual production for 2021 was slightly lower than guidance at 4,209 tonnes, representing less than 25% of MTV’s overall copper cathode production capacity.

GlobalData Strategic Intelligence

US Tariffs are shifting - will you react or anticipate?

Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis.

By GlobalData

Mining Technology Excellence Awards - Nominations Closed

Nominations are now closed for the Mining Technology Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact

Excellence in Action
Awarded the 2025 Mining Technology Excellence Innovation Award for Equipment Diagnostics, Razor Labs’ DataMind AI™ platform turns sensor data and imagery into actionable maintenance insights, avoiding hundreds of thousands of dollars in downtime. Find out how leading mines are using DataMind AI™ to keep critical assets running.

Discover the Impact