---
type: "Bill"
title: "Join Interstate Mining Compact Commission"
description: "Join Interstate Mining Compact Commission"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2023"
identifier: "SB 55"
citation: "Montana SB 55 (2023)"
classification: ["bill"]
subjects: ["Federal Government", "Interstate Cooperation", "Mining and Minerals (see also: Oil and Gas)"]
status: "enacted"
primary_sponsors: ["Steve Hinebauch"]
version_count: 2
action_count: 45
vote_count: 6
first_action: "2022-10-13T15:03:42+00:00"
last_action: "2023-05-02T15:26:21+00:00"
source: "openstates"
source_identifier: "ocd-bill/c1c2712d-b1af-40bb-9630-ad36d5092a7c"
source_url: "https://bills.legmt.gov/#/bill/20231/LC0719"
source_hash: "08a83111346c933f7e7d2e9c1911801f5c1c95e0c7ad457a2434482ba89c188a"
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 55 (2023) — Join Interstate Mining Compact Commission

## Version chain

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

1. **SB0055_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=1963)
2. **SB0055_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=1962)

## Votes

- (H) 2nd Reading Concurred — **98–2** (pass) · lower
- (S) 2nd Reading Passed — **41–9** (pass) · upper
- (H) 3rd Reading Concurred — **92–1** (pass) · lower
- (S) 3rd Reading Passed — **36–14** (pass) · upper
- (S) Committee Executive Action--Bill Passed — **11–0** (pass) · upper
- (H) Committee Executive Action--Bill Concurred — **15–0** (pass) · lower

## Sponsors

- Steve Hinebauch — primary (person)

## Timeline

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

- **2023-05-02T15:26:21+00:00** Chapter Number Assigned `became-law`
- **2023-05-01T19:06:00+00:00** (S) Signed by Governor `executive-signature`
- **2023-04-24T16:50:00+00:00** (S) Transmitted to Governor `executive-receipt`
- **2023-04-22T14:30:00+00:00** (H) Signed by Speaker `passage`
- **2023-04-19T16:00:00+00:00** (S) Signed by President `passage`
- **2023-04-13T21:10:43+00:00** (C) Printed - Enrolled Version Available `enrolled`
- **2023-04-13T19:50:53+00:00** (S) Returned from Enrolling
- **2023-04-07T21:13:55+00:00** (S) Sent to Enrolling
- **2023-04-06T23:17:35+00:00** (H) Returned to Senate
- **2023-04-06T22:06:00+00:00** (H) 3rd Reading Concurred `passage, reading-3`
- **2023-04-06T19:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2023-04-05T19:30:00+00:00** (H) 2nd Reading Concurred `reading-2, reading-2`
- **2023-04-05T19:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2023-03-20T19:55:00+00:00** (H) Committee Report--Bill Concurred
- **2023-03-17T21:00:01+00:00** (H) Committee Executive Action--Bill Concurred
- **2023-03-17T21:00:00+00:00** (H) Hearing
- **2023-02-17T20:15:40+00:00** (H) First Reading `reading-1`
- **2023-02-17T19:43:01+00:00** (H) Referred to Committee `referral-committee`
- **2023-02-06T23:57:21+00:00** (S) Transmitted to House
- **2023-02-03T21:13:00+00:00** (S) 3rd Reading Passed `passage, reading-3`
- **2023-02-03T20:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2023-02-02T20:10:00+00:00** (S) 2nd Reading Passed `reading-2, reading-2`
- **2023-02-02T20:00:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2023-01-31T20:04:00+00:00** (S) Committee Report--Bill Passed `committee-passage`
- **2023-01-27T20:14:00+00:00** (S) Committee Executive Action--Bill Passed `committee-passage`
- **2023-01-25T22:00:16+00:00** (S) Hearing
- **2023-01-04T23:49:11+00:00** (S) Fiscal Note Printed
- **2023-01-04T22:16:32+00:00** (C) Fiscal Note Unsigned
- **2023-01-04T20:49:46+00:00** (S) Fiscal Note Received `receipt`
- **2023-01-04T20:49:37+00:00** (S) Fiscal Note Requested
- **2023-01-02T20:02:35+00:00** (S) First Reading `reading-1`
- **2022-12-29T00:24:33+00:00** (S) Referred to Committee `referral-committee`
- **2022-12-12T23:17:28+00:00** (C) Introduced Bill Text Available Electronically
- **2022-12-09T23:20:56+00:00** (S) Introduced
- **2022-12-09T23:20:55+00:00** (C) Fiscal Note Probable
- **2022-12-07T17:56:00+00:00** (C) Draft Delivered to Requester
- **2022-12-06T22:28:57+00:00** (C) Draft in Assembly
- **2022-12-06T00:09:18+00:00** (C) Executive Director Review
- **2022-12-05T20:31:39+00:00** (C) Bill Draft Text Available Electronically
- **2022-12-05T20:31:38+00:00** (C) Draft in Final Drafter Review
- **2022-12-05T18:24:22+00:00** (C) Draft in Input/Proofing
- **2022-11-30T21:15:17+00:00** (C) Draft to Drafter - Edit Review
- **2022-11-29T05:11:36+00:00** (C) Draft in Edit
- **2022-11-28T18:46:21+00:00** (C) Draft in Legal Review
- **2022-10-13T15:03:42+00:00** (C) Draft Request Received `receipt`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/c1c2712d-b1af-40bb-9630-ad36d5092a7c`. Confidence: reported (aggregated from official Montana legislature records).