Guernsey Quarry
Active
Surface
Stone
Operator: Martin Marietta Materials Inc
Controller: Martin Marietta Materials Inc
Location: Guernsey, Platte County, WY
Employees: 10
168
Violations
26
S&S Violations
10
Accidents
$136K
Penalties
Recent Violations
View all 168 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 06/02/2025 | 56.14100(c) | Non-S&S | ModNegligence | $151 |
| 05/29/2025 | 56.12027 | Non-S&S | ModNegligence | $151 |
| 05/27/2025 | 56.6306(f)(1) | Non-S&S | LowNegligence | $151 |
| 02/12/2025 | 56.20003(a) | Non-S&S | ModNegligence | $151 |
| 05/14/2024 | 56.4200(b)(2) | Non-S&S | ModNegligence | $147 |
| 05/14/2024 | 56.11001 | Non-S&S | ModNegligence | $147 |
| 05/14/2024 | 56.14132(b)(2) | Non-S&S | ModNegligence | $147 |
| 04/25/2024 | 56.12016 | Non-S&S | ModNegligence | $147 |
| 12/19/2023 | 56.12028 | Non-S&S | ModNegligence | $147 |
| 12/18/2023 | 56.4201(a)(2) | Non-S&S | ModNegligence | $147 |
| 08/22/2023 | 56.14101(a)(3) | Non-S&S | LowNegligence | $143 |
| 03/22/2023 | 56.20003(a) | Non-S&S | ModNegligence | $143 |
| 03/21/2023 | 56.14205 | Non-S&S | ModNegligence | $143 |
| 03/21/2023 | 46.3(b)(4) | Non-S&S | ModNegligence | $143 |
| 06/21/2022 | 56.9315 | Non-S&S | LowNegligence | $183 |
| 06/21/2022 | 58.620 | Non-S&S | LowNegligence | $183 |
| 02/23/2022 | 56.12004 | Non-S&S | ModNegligence | $1,358 |
| 02/23/2022 | 46.9(b)(5) | Non-S&S | ModNegligence | $133 |
| 02/22/2022 | 56.12004 | Non-S&S | ModNegligence | $1,358 |
| 02/22/2022 | 56.12004 | Non-S&S | ModNegligence | $1,358 |
Accidents & Injuries
View all 10 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 03/18/2025 | OTHER | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 09/13/2021 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 51d restricted |
| 10/19/2018 | SLIP OR FALL OF PERSON | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 12/06/2016 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 07/15/2008 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 10/24/2007 | MACHINERY | DAYS AWAY FROM WORK ONLY | 3d lost |
| 11/21/2006 | DISORDERS (REPEATED TRAUMA) | OCCUPATNAL ILLNESS NOT DEG 1-6 | None |
| 01/05/2006 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 11/09/2004 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 04/11/2000 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 38d lost |
Inspections
View all 77 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 05/29/2025 | 06/04/2025 | 21.50 | 1 |
| 05/29/2025 | 05/30/2025 | 9.00 | 1 |
| 02/12/2025 | 03/03/2025 | 33.75 | 1 |
| 05/13/2024 | 05/15/2024 | 23.50 | 1 |
| 04/25/2024 | 04/26/2024 | 7.00 | 1 |
| 12/18/2023 | 12/20/2023 | 18.25 | 1 |
| 08/21/2023 | 08/23/2023 | 29.00 | 1 |
| 03/20/2023 | 03/22/2023 | 21.00 | 1 |
| 06/20/2022 | 06/26/2022 | 11.25 | 1 |
| 02/22/2022 | 02/23/2022 | 23.25 | 1 |
Mine Details
MSHA Mine ID4800004
Mine TypeSurface
StatusActive
CommodityStone
SIC DescriptionCrushed, Broken Limestone NEC
Employees10
Days/Week5.0
Hours/Shift8.0
Coordinates42.2727780, -104.7261110
Nearest TownGuernsey
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Frequently Asked Questions
How many MSHA violations does Guernsey Quarry have?
Guernsey Quarry has 168 MSHA violations on record, of which 26 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $136K.
What type of mine is Guernsey Quarry?
Guernsey Quarry is a Surface mine producing Stone, located in Guernsey, Platte County, WY. It currently has 10 employees.
Has anyone been injured or killed at Guernsey Quarry?
According to MSHA records, Guernsey Quarry has 10 reported accident/injury records and 0 fatalities on file.
Who operates Guernsey Quarry?
Guernsey Quarry is operated by Martin Marietta Materials Inc and controlled by Martin Marietta Materials Inc. MSHA Mine ID: 4800004.