Rule lifecycle · DOCKET:S2D2S SS08011000 SX064A000 25XS501520
Montana Regulatory Program
Interior Department, Surface Mining Reclamation and Enforcement Office — observed across 4 documents over 110 days. Use the source documents below before deciding whether this affects your business.
In plain English
Montana's mining regulations get tougher with new standards for how companies must restore and protect the land after extracting minerals and metals from the ground. If your business operates in mining, land reclamation, or environmental consulting in Montana, you need to understand the updated compliance rules that take effect August 14th.
First seen
May 7, 2026
Last seen
Aug 25, 2026
Latest stage
Rule
PRORULE → RULE
69d
Effective on
Thursday, September 24, 2026
Stage timeline
Proposed·May 7, 2026·91 FR 24761
Utah Regulatory Program
comments close Jun 8, 2026#2026-09024
Final·Jul 15, 2026·91 FR 43328
Montana Regulatory Program
effective Aug 14, 2026#2026-14245
Final·Jul 15, 2026·91 FR 43323
Montana Regulatory Program
effective Aug 14, 2026#2026-14244
Final·Aug 25, 2026·91 FR 54803
Montana Regulatory Program
effective Sep 24, 2026#2026-17333