Mineral Property Activity

​

Lost Creek Property

​

Shirley Basin
Project

​

Other U.S. Properties

​

Total

​

​

​

​

​

​

​

​

​

December 31, 2025

​

9,183

​

19,984

​

14,714

​

43,881

​

​

​

​

​

​

​

​

​

Change in estimated asset retirement costs

​

5,150

​

1,084

​

—

​

6,234

Depletion and amortization

​

(3,947)

​

—

​

—

​

(3,947)

​

​

​

​

​

​

​

​

​

September 30, 2026

​

10,386

​

21,068

​

14,714

​

46,168