Data / Mines / Montana / Portable 45 200
Portable 45 200: 1 MSHA citation
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Portable 45 200 is an intermittent construction sand and gravel surface mine in Lewis And Clark County, Montana, operated by Cornerstone Crushing LLC with 2 employees on MSHA's record (mine ID 2402829). Since January 1, 2022 MSHA inspectors issued 1 citation and orders there with $151 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch Portable 45 200 (MSHA mine ID 2402829) in Lewis And Clark County, Montana: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 2402829
- Status
- Intermittent since August 25, 2026
- Main commodity
- Construction sand and gravel
- Mine type
- Surface
- County
- Lewis And Clark County, Montana
- Nearest town
- Wolf Creek
- Operator
- Cornerstone Crushing LLC
- Employees
- 2
- MSHA field office
- Helena MT Field Office
- Citations and orders since January 1, 2022
- 1
- Significant and substantial
- 0 (0.0%)
- Closure orders
- 0
- High negligence or reckless
- 0
- Proposed penalties
- $151
- Amount paid so far
- $151
- Inspections
- 1
- Inspector hours on site
- 9
- Citations per inspection
- 1.00 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- March 27, 2026
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2026 | 1 | 0 | $151 | 0 |
Standards cited most at Portable 45 200
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.4104 | Surface metal and nonmetal mines | 1 |
Other open mines in Lewis And Clark County, Montana
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Port #1 | Bullock Contracting LLC | Lewis And Clark County, MT | Construction sand and gravel | 4 | 18 |
| Ironside Stone Works Quarry | Ironside Stone Works Inc | Lewis And Clark County, MT | Dimension slate | 3 | 15 |
| Wirth Quarry | Mike Wirth Construction | Lewis And Clark County, MT | Construction sand and gravel | 3 | 10 |
| Valley Sand & Gravel (Portable) | Valley Excavating Sand & Gravel LLC | Lewis And Clark County, MT | Construction sand and gravel | 4 | 8 |
| Helena Sand & Gravel-Portable Wash Plant | Montana Mtls & Cons | Lewis And Clark County, MT | Construction sand and gravel | 3 | 7 |
| Portable Operations 2 | Debco Construction | Lewis And Clark County, MT | Construction sand and gravel | 3 | 6 |
| Screen Plant | Montana Mtls & Cons | Lewis And Clark County, MT | Construction sand and gravel | 2 | 0 |
US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.