Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement. MONGOLIAN MINING CORPORATION (Incorporated in the Cayman Islands with limited liability) (Stock Code: 975) OPERATIONAL UPDATE FOR THE QUARTER E ...

Core Viewpoint - Mongolian Mining Corporation reported a significant decrease in coal production and sales for the quarter ended June 30, 2025, while also providing updates on its gold mining operations, particularly the commissioning of the Bayan Khundii gold mine [2][5][12]. Group 1: Coking Coal Operations - The Group is the largest producer and exporter of washed coking coal products in Mongolia, operating the Ukhaa Khudag and Baruun Naran coking coal mines [4][3]. - The combined output of run-of-mine (ROM) coal from UHG and BN mines was 3,428.4 thousand tonnes, reflecting a 7% quarter-on-quarter (QoQ) and 28% year-on-year (YoY) decrease [5]. - A total of 3,605.7 thousand tonnes of ROM coking coal was processed, resulting in 2,178.1 thousand tonnes of washed coking coal products, which is a 3% QoQ increase but a 2% YoY decrease [6][10]. - The total sales of washed coking coal products were 1,739.7 thousand tonnes, showing a 9% QoQ increase but a 25% YoY decrease [7][10]. Group 2: Gold and Metals Operations - The Group holds a 50% equity stake in Erdene Mongol LLC, which is developing the Bayan Khundii gold mine [11]. - The commissioning of the BKH gold mine processing plant and related facilities was conducted, with commercial production expected to start in the third quarter of 2025 [12].