Data / Mines / Wyoming / Portable Crusher
Portable Crusher, Johnson County, Wyoming: 12 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Portable Crusher is an intermittent construction sand and gravel surface mine in Johnson County, Wyoming, operated by Mullinax Inc with 6 employees on MSHA's record (mine ID 4801791). Since January 1, 2022 MSHA inspectors issued 12 citations and orders there with $2,766 in proposed penalties, and 1 accident report was filed there, with 1 injury or illness case.
The request: Watch Portable Crusher (MSHA mine ID 4801791) in Johnson County, Wyoming: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 4801791
- Status
- Intermittent since October 18, 2024
- Main commodity
- Construction sand and gravel
- Mine type
- Surface
- County
- Johnson County, Wyoming
- Nearest town
- Buffalo
- Operator
- Mullinax Inc
- Employees
- 6
- MSHA field office
- Gillette WY Field Office
- Citations and orders since January 1, 2022
- 12
- Significant and substantial
- 4 (33.3%)
- Closure orders
- 0
- High negligence or reckless
- 0
- Proposed penalties
- $2,766
- Amount paid so far
- $2,766
- Inspections
- 14
- Inspector hours on site
- 79
- Citations per inspection
- 0.86 (all mines 2.30)
- Accident reports
- 1
- Injury and illness cases
- 1
- Fatalities
- 0
- Latest MSHA record
- June 30, 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 |
|---|---|---|---|---|
| 2023 | 7 | 4 | $2,027 | 1 |
| 2024 | 4 | 0 | $588 | 0 |
| 2026 | 1 | 0 | $151 | 0 |
Standards cited most at Portable Crusher
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 56.14101 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14131 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.9315 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.11017 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14105 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.20008 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at Portable Crusher
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 1 |
What the accident reports at Portable Crusher describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Powered haulage | 1 |
Equipment named in accident reports at Portable Crusher
| Equipment | Reports |
|---|---|
| Conveyor | 1 |
Other open mines in Johnson County, Wyoming
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Kaycee Mine | Black Hills Bentonite-A Limited Liability Co | Johnson County, WY | Bentonite | 13 | 33 |
| Wash Plant 5 | Croell, Inc. | Johnson County, WY | Construction sand and gravel | 5 | 20 |
| Quarter Circle 41 Ranch Pit | Wyoming Construction Materials | Johnson County, WY | Construction sand and gravel | 4 | 14 |
| Stone Yard #1 | The Stone Yard, LLC | Johnson County, WY | Construction sand and gravel | 3 | 14 |
| Cross H Pit | Carlat Construction, Inc. | Johnson County, WY | Construction sand and gravel | 2 | 13 |
| Metso Screening Plant | Prism Logistics, LLC | Johnson County, WY | Construction sand and gravel | 2 | 4 |
| Fisher Industries Plant 42 | Fisher Sand & Gravel Company | Johnson County, WY | Construction sand and gravel | 6 | 3 |
| Fabtech Wash Plant | Powder River Sand and Gravel | Johnson County, WY | Construction sand and gravel | 0 | 2 |
| 3R Pit | 3R Farm and Ranch, LLC | Johnson County, WY | Construction sand and gravel | 6 | 1 |
| T.a. Ranch Pit | Simon Contractors | Johnson County, WY | Construction sand and gravel | 3 | 1 |
| Screen 1 | Kart LLC | Johnson County, WY | Construction sand and gravel | 3 | 1 |
| Crusher 1 Rental | Kart LLC | Johnson County, WY | Construction sand and gravel | 3 | 1 |
| Track Jaw | Prism Logistics, LLC | Johnson County, WY | Construction sand and gravel | 2 | 1 |
| Kennedy | Mullinax Inc | Johnson County, WY | Construction sand and gravel | 2 | 1 |
| WCM Mobile Trommel | Wyoming Construction Materials | Johnson County, WY | Sand, common | 0 | 1 |
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.