Key Takeaway
Onyx Portable #1 is a intermittent surface mine producing SandAndGravel, located in Boylston, Worcester County, MA. It has 7 violations on record (1 S&S) and $1K in proposed penalties. Operated by Onyx Corporation.
Onyx Portable #1
Operator: Onyx Corporation
Controller: John D Durkin
Location: Boylston, Worcester County, MA
Employees: 2
Recent Violations
View all 7 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 12/03/2025 | 56.14112(b) | S&S | ModNegligence | $165 |
| 12/03/2025 | 56.14132(a) | Non-S&S | ModNegligence | $151 |
| 07/23/2024 | 50.30(a) | Non-S&S | ModNegligence | $147 |
| 07/23/2024 | 56.23002(a) | Non-S&S | ModNegligence | $147 |
| 04/04/2023 | 56.4201(a)(2) | Non-S&S | LowNegligence | $143 |
| 04/04/2023 | 46.9(c)(3) | Non-S&S | ModNegligence | $143 |
| 05/13/2019 | 56.14107(a) | Non-S&S | ModNegligence | $121 |
Inspections
View all 7 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 12/01/2025 | 12/03/2025 | 9.50 | 1 |
| 03/31/2025 | 03/31/2025 | 8.25 | 1 |
| 07/22/2024 | 07/23/2024 | 8.75 | 1 |
| 04/04/2023 | 04/05/2023 | 17.75 | 1 |
| 08/24/2021 | 08/24/2021 | 1.00 | 1 |
| 08/31/2020 | 09/01/2020 | 8.75 | 1 |
| 05/13/2019 | 05/20/2019 | 19.75 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Onyx Portable #1 have?
Onyx Portable #1 has 7 MSHA violations on record, of which 1 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $1K.
What type of mine is Onyx Portable #1?
Onyx Portable #1 is a Surface mine producing SandAndGravel, located in Boylston, Worcester County, MA. It currently has 2 employees.
Has anyone been injured or killed at Onyx Portable #1?
According to MSHA records, Onyx Portable #1 has 0 reported accident/injury records and 0 fatalities on file.
Who operates Onyx Portable #1?
Onyx Portable #1 is operated by Onyx Corporation and controlled by John D Durkin. MSHA Mine ID: 1901282.