Ralston Quarry
Active
Surface
Stone
Operator: Oldcastle SW Group, Inc
Controller: CRH PLC
Location: Golden, Jefferson County, CO
Employees: 17
232
Violations
59
S&S Violations
29
Accidents
$68K
Penalties
Recent Violations
View all 232 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 10/07/2025 | 56.12068 | Non-S&S | LowNegligence | $151 |
| 10/07/2025 | 46.9(d)(3) | Non-S&S | ModNegligence | $151 |
| 10/02/2025 | 56.14205 | Non-S&S | LowNegligence | $151 |
| 10/02/2025 | 56.20014 | Non-S&S | ModNegligence | $151 |
| 07/24/2025 | 56.12028 | Non-S&S | ModNegligence | $151 |
| 07/24/2025 | 56.12004 | Non-S&S | ModNegligence | $226 |
| 07/24/2025 | 56.11001 | S&S | ModNegligence | $336 |
| 07/24/2025 | 56.4201(a)(2) | Non-S&S | ModNegligence | $151 |
| 07/23/2025 | 56.14112(a)(1) | Non-S&S | ModNegligence | $151 |
| 03/12/2025 | 56.14107(a) | Non-S&S | ModNegligence | $151 |
| 03/11/2025 | 56.12018 | Non-S&S | ModNegligence | $151 |
| 03/11/2025 | 56.12028 | Non-S&S | ModNegligence | $226 |
| 03/10/2025 | 56.11001 | S&S | ModNegligence | $336 |
| 03/10/2025 | 56.4201(a)(2) | Non-S&S | ModNegligence | $151 |
| 03/10/2025 | 56.4200(a)(1) | Non-S&S | ModNegligence | $151 |
| 08/12/2024 | 56.14107(a) | Non-S&S | ModNegligence | $147 |
| 08/12/2024 | 56.14100(a) | Non-S&S | ModNegligence | $147 |
| 09/14/2023 | 56.14100(b) | Non-S&S | ModNegligence | $143 |
| 09/14/2023 | 56.20003(a) | S&S | ModNegligence | $295 |
| 09/14/2023 | 56.12032 | Non-S&S | LowNegligence | $143 |
Accidents & Injuries
View all 29 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 09/09/2024 | SLIP OR FALL OF PERSON | DYS AWY FRM WRK & RESTRCTD ACT | 69d lost, 3d restricted |
| 11/09/2022 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 06/08/2020 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 08/28/2018 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 38d restricted |
| 04/06/2017 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 65d lost |
| 08/26/2016 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 15d restricted |
| 05/22/2015 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 04/06/2015 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 6d restricted |
| 06/19/2014 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 09/05/2013 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 47d restricted |
Inspections
View all 64 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 10/01/2025 | 10/09/2025 | 49.00 | 1 |
| 07/23/2025 | 07/25/2025 | 22.25 | 1 |
| 07/10/2025 | 07/10/2025 | 2.25 | 1 |
| 03/10/2025 | 03/14/2025 | 39.00 | 1 |
| 08/12/2024 | 08/19/2024 | 19.00 | 1 |
| 09/14/2023 | 09/15/2023 | 18.25 | 1 |
| 01/30/2023 | 01/30/2023 | 8.00 | 1 |
| 07/19/2022 | 07/20/2022 | 17.00 | 1 |
| 03/14/2022 | 03/16/2022 | 28.00 | 1 |
| 04/07/2021 | 04/08/2021 | 16.00 | 1 |
Mine Details
MSHA Mine ID0503007
Mine TypeSurface
StatusActive
CommodityStone
SIC DescriptionCrushed, Broken Stone NEC
Employees17
Days/Week5.0
Hours/Shift8.0
Coordinates39.8138890, -105.2480560
Nearest TownGolden
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Frequently Asked Questions
How many MSHA violations does Ralston Quarry have?
Ralston Quarry has 232 MSHA violations on record, of which 59 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $68K.
What type of mine is Ralston Quarry?
Ralston Quarry is a Surface mine producing Stone, located in Golden, Jefferson County, CO. It currently has 17 employees.
Has anyone been injured or killed at Ralston Quarry?
According to MSHA records, Ralston Quarry has 29 reported accident/injury records and 0 fatalities on file.
Who operates Ralston Quarry?
Ralston Quarry is operated by Oldcastle SW Group, Inc and controlled by CRH PLC. MSHA Mine ID: 0503007.