---
type: "Bill"
title: "Revise laws related to state labs"
description: "Revise laws related to state labs"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2019"
identifier: "HB 586"
citation: "Montana HB 586 (2019)"
classification: ["bill"]
subjects: ["Agriculture (see also: Livestock; Taxation--Agriculture/Livestock)", "Buildings and Building Regulations", "Fish and Wildlife", "Livestock (see also: Agriculture; Taxation--Agriculture/Livestock)", "State Government"]
status: "enacted"
primary_sponsors: ["Bradley Hamlett"]
version_count: 5
action_count: 59
vote_count: 9
first_action: "2018-12-05"
last_action: "2019-04-29"
source: "openstates"
source_identifier: "ocd-bill/d8c1269c-598f-4a77-bf00-3dc59235367a"
source_url: "http://laws.leg.mt.gov/legprd/LAW0210W$BSIV.ActionQuery?P_BILL_NO1=586&P_BLTP_BILL_TYP_CD=HB&Z_ACTION=Find&P_SESS=20191"
source_hash: "2071132d64c0896a4324814f16b539ae882f19fe617096a83b7593822345789f"
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 HB 586 (2019) — Revise laws related to state labs

## Version chain

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

1. **HB0586_1.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2019/HB0599//HB0586_1.pdf)
2. **HB0586_2.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2019/HB0599//HB0586_2.pdf)
3. **HB0586_3.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2019/HB0599//HB0586_3.pdf)
4. **HB0586_x.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2019/HB0599//HB0586_x.pdf)
5. **Enrolled** (enrolled) — [source](http://leg.mt.gov/bills/2019/billpdf/HB0586.pdf)

## Votes

- DO PASS — **17–0** (pass) · lower
- Do Concur — **97–2** (pass) · lower
- BE CONCURRED IN — **11–0** (pass) · upper
- Do Concur — **47–2** (pass) · upper
- Do Concur — **99–1** (pass) · lower
- Do Pass — **94–6** (pass) · lower
- AMD-002 Lang D/PASS — **50–0** (pass) · upper
- Do Pass — **93–6** (pass) · lower
- Do Pass As Amended — **49–1** (pass) · upper

## Sponsors

- Bradley Hamlett — primary (person)

## Timeline

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

- **2018-12-05** Draft Request Received
- **2019-02-15** Draft On Hold
- **2019-02-19** Draft Taken Off Hold
- **2019-02-19** Draft to Requester for Review
- **2019-02-19** Draft in Legal Review
- **2019-02-19** Draft in Edit
- **2019-02-19** Draft to Drafter - Edit Review [KWK]
- **2019-02-20** Draft in Input/Proofing
- **2019-02-20** Draft in Final Drafter Review
- **2019-02-20** Bill Draft Text Available Electronically
- **2019-02-20** Executive Director Review
- **2019-02-20** Draft in Assembly
- **2019-02-20** Executive Director Final Review
- **2019-02-20** Draft Ready for Delivery
- **2019-02-20** Draft Delivered to Requester
- **2019-02-20** Introduced `introduction`
- **2019-02-20** Introduced Bill Text Available Electronically
- **2019-02-21** Referred to Committee `referral-committee`
- **2019-02-21** First Reading `reading-1`
- **2019-02-26** Hearing
- **2019-02-26** Committee Executive Action--Bill Passed `committee-passage`
- **2019-02-27** Committee Report--Bill Passed `committee-passage`
- **2019-02-27** Sponsors Engrossed
- **2019-02-27** Printed - New Version Available
- **2019-02-28** Scheduled for 2nd Reading
- **2019-02-28** 2nd Reading Passed `reading-2`
- **2019-03-01** Scheduled for 3rd Reading
- **2019-03-01** 3rd Reading Passed `passage, reading-3`
- **2019-03-01** Transmitted to Senate
- **2019-03-07** First Reading `reading-1`
- **2019-03-09** Referred to Committee `referral-committee`
- **2019-03-14** Hearing
- **2019-03-19** Committee Executive Action--Bill Concurred
- **2019-03-20** Committee Report--Bill Concurred
- **2019-03-22** Scheduled for 2nd Reading
- **2019-03-22** 2nd Reading Pass Consideration
- **2019-03-25** Scheduled for 2nd Reading
- **2019-03-25** 2nd Reading Motion to Amend Carried
- **2019-03-25** 2nd Reading Concurred as Amended `reading-2`
- **2019-03-25** Fiscal Note Requested
- **2019-03-25** Printed - New Version Available
- **2019-03-28** Scheduled for 3rd Reading
- **2019-03-28** 3rd Reading Concurred `passage, reading-3`
- **2019-03-28** Returned to House with Amendments
- **2019-03-29** Fiscal Note Received
- **2019-03-29** Fiscal Note Unsigned
- **2019-04-02** Fiscal Note Printed
- **2019-04-02** Scheduled for 2nd Reading
- **2019-04-02** 2nd Reading Senate Amendments Concurred `amendment-passage, amendment-amendment, reading-2`
- **2019-04-03** Scheduled for 3rd Reading
- **2019-04-03** 3rd Reading Passed as Amended by Senate `passage, reading-3`
- **2019-04-03** Sent to Enrolling
- **2019-04-05** Returned from Enrolling
- **2019-04-08** Printed - Enrolled Version Available
- **2019-04-09** Signed by Speaker
- **2019-04-13** Signed by President
- **2019-04-16** Transmitted to Governor `executive-receipt`
- **2019-04-26** Signed by Governor `executive-signature`
- **2019-04-29** Chapter Number Assigned

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/d8c1269c-598f-4a77-bf00-3dc59235367a`. Confidence: reported (aggregated from official Montana legislature records).