铜陵有色：目前，铜陵有色金属集团股份有限公司持有中铁建铜冠70%股权

Core Viewpoint - The company is responding to investor inquiries regarding the operational status and ownership of the Mirador copper mine, indicating that the mine's second phase is set to begin heavy load testing in July 2025, and it holds a 70% stake in the operating entity [2]. Group 1 - The Mirador copper mine's second phase expansion project is scheduled to start heavy load testing in July 2025 [2]. - The company holds a 70% equity stake in China Railway Construction Copper Crown Investment Co., Ltd., which is the main operating entity of the Mirador copper mine [2]. - Investors are interested in the projected profits from the Mirador copper mine based on the average LME copper price for 2025, specifically for the year 2026 [2].