Capstone Copper Announces Short-Term Production Halt at Mantoverde Facility

Capstone Copper Corp. Production Update

• Motor Failure Impact: Capstone Copper Corp. has reported a temporary disruption in sulphide copper production at the Mantoverde mine in Chile due to a failure of one of its ball mill electrical drive motors on August 24. A second motor failure occurred on August 30, leading to reduced production capacity.

• Operational Adjustments: The company is implementing measures to mitigate the impact of the motor failures. They plan to operate at approximately half capacity by bypassing the ball mill, a strategy previously executed successfully. Additionally, maintenance scheduled for September may be rescheduled to coincide with the downtime.

• Production Estimates: The estimated repair time for the ball mill motor is about four weeks. During this period, production is expected to decrease by approximately 3,000 to 4,000 tonnes of copper in concentrate.

Company Overview

• Business Focus: Capstone Copper Corp. is a copper mining company based in Vancouver, Canada, with operations in the Americas, including the Pinto Valley mine in Arizona, Cozamin mine in Mexico, and Mantoverde mine in Chile. The company also holds a 70% stake in the Mantoverde mine and has a fully permitted project, Santo Domingo, nearby.

• Strategic Goals: The company aims to achieve significant copper production growth while focusing on cost efficiency and operational improvements. Their commitment includes responsible production practices and creating positive impacts in local communities.

Forward-Looking Statements

• Cautionary Note: The document includes forward-looking statements regarding production timelines and operational capacity, which are subject to change based on various factors, including equipment repair complexities and external economic conditions. The company emphasizes that actual results may differ from these projections.