Key Takeaway
Portable Plant 1 is a intermittent surface mine producing SandAndGravel, located in Cheyenne, Laramie County, WY. It has 18 violations on record (4 S&S) and $4K in proposed penalties. Operated by Martin Marietta Materials Inc..
Portable Plant 1
Operator: Martin Marietta Materials Inc.
Controller: Martin Marietta Materials Inc
Location: Cheyenne, Laramie County, WY
Employees: 3
Recent Violations
View all 18 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 05/20/2020 | 56.4101 | Non-S&S | ModNegligence | $123 |
| 05/20/2020 | 56.4101 | Non-S&S | ModNegligence | $123 |
| 12/10/2019 | 56.12004 | Non-S&S | ModNegligence | $144 |
| 11/19/2019 | 56.5001(a)/.5005 | Non-S&S | $0 | |
| 09/26/2019 | 56.5001(a)/.5005 | S&S | ModNegligence | $355 |
| 10/04/2018 | 46.3(b) | Non-S&S | LowNegligence | $118 |
| 10/31/2007 | 56.12004 | Non-S&S | ModNegligence | $108 |
| 10/31/2007 | 56.14107(a) | S&S | ModNegligence | $162 |
| 10/31/2007 | 56.14112(a)(1) | S&S | ModNegligence | $243 |
| 10/31/2007 | 56.11012 | Non-S&S | ModNegligence | $108 |
| 10/31/2007 | 56.14100(b) | Non-S&S | HighNegligence | $108 |
| 10/31/2007 | 56.12004 | Non-S&S | ModNegligence | $100 |
| 10/31/2007 | 56.3130 | S&S | HighNegligence | $2,000 |
| 07/22/2004 | 56.1000 | Non-S&S | HighNegligence | $60 |
| 03/11/2004 | 41.11(a) | Non-S&S | HighNegligence | $60 |
| 03/11/2004 | 46.3(a) | Non-S&S | ModNegligence | $60 |
| 03/11/2004 | 45.4(b) | Non-S&S | ModNegligence | $60 |
| 09/05/2002 | 56.14101(a)(2) | Non-S&S | ModNegligence | $55 |
Accidents & Injuries
View all 1 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 01/14/2004 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
Inspections
View all 26 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 08/11/2025 | 08/12/2025 | 20.00 | 1 |
| 08/15/2024 | 08/16/2024 | 3.50 | 1 |
| 08/10/2023 | 08/10/2023 | 9.00 | 1 |
| 05/11/2021 | 05/11/2021 | 9.50 | 1 |
| 05/20/2020 | 05/20/2020 | 19.50 | 1 |
| 12/10/2019 | 12/10/2019 | 8.00 | 1 |
| 12/09/2019 | 12/10/2019 | 6.75 | 1 |
| 11/19/2019 | 11/19/2019 | 2.75 | 1 |
| 09/26/2019 | 09/27/2019 | 18.25 | 1 |
| 10/11/2018 | 10/11/2018 | 0.25 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Portable Plant 1 have?
Portable Plant 1 has 18 MSHA violations on record, of which 4 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $4K.
What type of mine is Portable Plant 1?
Portable Plant 1 is a Surface mine producing SandAndGravel, located in Cheyenne, Laramie County, WY. It currently has 3 employees.
Has anyone been injured or killed at Portable Plant 1?
According to MSHA records, Portable Plant 1 has 1 reported accident/injury records and 0 fatalities on file.
Who operates Portable Plant 1?
Portable Plant 1 is operated by Martin Marietta Materials Inc. and controlled by Martin Marietta Materials Inc. MSHA Mine ID: 0504359.