Project Overview
The Stillwater (including Stillwater east) and East Boulder mines are underground mining operations, located near the towns of Nye and McLeod in Montana, US. The mining assets are located on the front range of the Beartooth Mountains with elevations exceeding 2,700 m above sea level. Stillwater is the only US-based mine for platinum group metals (“PGM”s) and the largest primary producer of PGMs outside of South Africa and the Russian Federation.
The Stillwater Mine and East Boulder Mine have been in operation since 1986 and 2002, respectively. The mines produce from the J-M Reef, the world’s highest-grade PGM deposit. Each mine has its own mill and concentrator infrastructure on site. The Columbus metallurgical complex is a state-of-the-art operation that is capable of providing smelting and refining processes for the mine concentrates. The complex produces a PGM-rich filter cake that is shipped to a third-party precious metal refinery.
Stream Details
| Date of Contract |
16-Jul-18 |
| Term |
Life of Mine |
| Stream |
100% of gold and 4.5% of palladium until 375 koz palladium received, reduced to 2.25%, until 550 koz ounces received, 1% thereafter |
| Upfront Consideration |
$500M |
| Per Unit Production Payment |
18% of spot Au and Pd until reduction of upfront payment to zero and, 22% of spot thereafter |
| Cost Quartile |
First |
For more information on the Stillwater and East Boulder mines, please visit: www.sibanyestillwater.com (opens in new tab)