---
type: "Bill"
title: "Revise laws regarding mining leases on state lands"
description: "Revise laws regarding mining leases on state lands"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "SB 520"
citation: "Montana SB 520 (2025)"
classification: ["bill"]
subjects: ["Mining and Minerals", "Property", "State Lands"]
status: "enacted"
primary_sponsors: ["Tony Tezak"]
version_count: 31
action_count: 46
vote_count: 8
first_action: "2024-10-01T18:51:08+00:00"
last_action: "2025-05-16T16:13:36+00:00"
source: "openstates"
source_identifier: "ocd-bill/b8417eea-3c3b-4ed4-a42f-7b6898ca9b74"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC0439?open_tab=sum"
source_hash: "043f5f2781a6ab7f3b0b6502c0e1cf5908d3a31120e6869cab273b073dad0320"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-mt"]
---

# Montana SB 520 (2025) — Revise laws regarding mining leases on state lands

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **LC0439.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=286280)
2. **SB0520.001.001_Amendments-in-Context_final-condensed.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301101)
3. **SB0520.001.001_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301097)
4. **SB0520_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=289348)
5. **SB0520_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=293554)
6. **SB0520_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=293707)
7. **SB0520_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301923)
8. **SB0520_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=288250)
9. **SB0520_2(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=302487)
10. **SB0520_2(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=302488)
11. **SB0520_2(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=302638)
12. **SB0520_2(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309038)
13. **SB0520_2(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309871)
14. **SB0520_2(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=314099)
15. **SB0520_2(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=314102)
16. **SB0520_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=302482)
17. **SB0520_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=314104)
18. **SB0520_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=323034)
19. **SB0520_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=323035)
20. **SB0520_X(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=325002)
21. **SB0520_X(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=325790)
22. **SB0520_X(14).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=327329)
23. **SB0520_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=314105)
24. **SB0520_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=316511)
25. **SB0520_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=317394)
26. **SB0520_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=318037)
27. **SB0520_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=318038)
28. **SB0520_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=318043)
29. **SB0520_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320909)
30. **SB0520_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=323033)
31. **SB0520_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=314103)

## Votes

- Do Pass — **41–9** (pass) · upper
- Do Pass — **46–4** (pass) · upper
- do_pass — **8–3** (pass) · upper
- be_concurred_in_as_amended — **8–6** (pass) · lower
- Do Pass — **36–13** (pass) · upper
- Do Concur — **61–39** (pass) · lower
- Do Pass — **49–1** (pass) · upper
- Do Concur — **61–38** (pass) · lower

## Sponsors

- Tony Tezak — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2024-10-01T18:51:08+00:00** (LC) Drafter Assigned
- **2025-02-11T21:18:31+00:00** (LC) Draft On Hold
- **2025-02-18T18:28:08+00:00** (LC) Draft Taken Off Hold
- **2025-02-20T15:30:31+00:00** (LC) Draft in Legal Review
- **2025-02-20T21:51:51+00:00** (LC) Draft in Edit
- **2025-02-24T01:39:30+00:00** (LC) Draft in Input/Proofing
- **2025-02-24T17:36:09+00:00** (LC) Draft in Final Drafter Review
- **2025-02-24T20:07:09+00:00** (LC) Draft in Assembly
- **2025-02-24T22:32:09+00:00** (LC) Draft Ready for Delivery
- **2025-02-25T23:42:11+00:00** (LC) Draft Delivered to Requester
- **2025-02-26T17:17:53+00:00** (S) Introduced
- **2025-02-26T20:36:00+00:00** (S) First Reading `reading-1`
- **2025-02-27T00:39:24+00:00** (S) Referred to Committee - (S) Natural Resources `referral-committee`
- **2025-02-27T01:05:42+00:00** (S) Fiscal Note Requested
- **2025-02-28T16:30:02+00:00** (S) Hearing - (S) Natural Resources
- **2025-03-04T00:18:38+00:00** (S) Fiscal Note Received `receipt`
- **2025-03-04T00:18:45+00:00** (S) Fiscal Note Unsigned
- **2025-03-04T02:00:41+00:00** (S) Committee Executive Action--Bill Passed - (S) Natural Resources `committee-passage`
- **2025-03-04T15:55:09+00:00** (S) Fiscal Note Printed
- **2025-03-04T20:06:00+00:00** (S) Committee Report--Bill Passed - (S) Natural Resources `committee-passage`
- **2025-03-06T09:28:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-03-06T23:13:00+00:00** (S) 2nd Reading Passed `reading-2, reading-2`
- **2025-03-07T00:29:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-03-07T01:54:00+00:00** (S) 3rd Reading Passed `passage, reading-3`
- **2025-03-07T16:19:15+00:00** (S) Transmitted to House
- **2025-03-17T15:28:33+00:00** (H) Referred to Committee - (H) Natural Resources `referral-committee`
- **2025-03-17T19:15:00+00:00** (H) First Reading `reading-1`
- **2025-03-24T15:09:06+00:00** (H) Hearing - (H) Natural Resources
- **2025-04-01T01:13:21+00:00** (H) Committee Executive Action--Bill Concurred as Amended - (H) Natural Resources
- **2025-04-01T19:48:00+00:00** (H) Committee Report--Bill Concurred as Amended - (H) Natural Resources
- **2025-04-10T14:30:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-04-10T15:39:00+00:00** (H) 2nd Reading Concurred `reading-2, reading-2`
- **2025-04-11T21:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-04-11T23:25:00+00:00** (H) 3rd Reading Concurred `passage, reading-3`
- **2025-04-12T01:03:00+00:00** (H) Returned to Senate with Amendments
- **2025-04-17T19:00:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-04-17T23:50:00+00:00** (S) 2nd Reading House Amendments Concurred `amendment-amendment, amendment-passage, reading-2, reading-2`
- **2025-04-18T15:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-04-18T21:56:00+00:00** (S) 3rd Reading Passed as Amended by House `passage, passage, reading-3, reading-3`
- **2025-04-22T12:36:19+00:00** (S) Sent to Enrolling
- **2025-04-25T21:31:40+00:00** (S) Returned from Enrolling
- **2025-04-29T20:00:24+00:00** (S) Signed by President `passage`
- **2025-05-05T19:00:51+00:00** (H) Signed by Speaker `passage`
- **2025-05-05T19:55:00+00:00** (S) Transmitted to Governor `executive-receipt`
- **2025-05-13T18:00:00+00:00** (S) Signed by Governor `executive-signature`
- **2025-05-16T16:13:36+00:00** Chapter Number Assigned `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/b8417eea-3c3b-4ed4-a42f-7b6898ca9b74`. Confidence: reported (aggregated from official Montana legislature records).