Air conditioner had a major failure and leaked freon fumes into cab of drill for four hours before driller started noticing symptoms. ER was decided upon. Return to work given after 2 days rest. Air conditioner was completely gone over and rebuilt.
Chico Quarry Metal/Non-Metal
Chico Quarry has $10K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.
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Email me when a new MSHA incident is filed at Chico Quarry.
- Fatalities
- 0
- Total incidents
- 4
- Years on record
- 2009–2025
- Latest incident
- May 2025
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This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.Chico Quarry has $10K in proposed MSHA penalties and $0 outstanding across 0 contested dockets.
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Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.ⓘ
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2025 Q4 | 14,981 | 2 | 0 | 133.5 |
| 2025 Q3 | 16,240 | 1 | 0 | 61.6 |
| 2025 Q2 | 14,037 | 0 | 0 | 0.0 |
| 2025 Q1 | 13,356 | 0 | 0 | 0.0 |
| 2024 Q4 | 16,114 | 0 | 0 | 0.0 |
| 2024 Q3 | 16,403 | 1 | 0 | 61.0 |
| 2024 Q2 | 17,487 | 0 | 0 | 0.0 |
| 2024 Q1 | 19,015 | 0 | 0 | 0.0 |
Show 68 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 16,166 | 1 | 0 | 61.9 |
| 2023 Q3 | 17,499 | 0 | 0 | 0.0 |
| 2023 Q2 | 17,366 | 2 | 0 | 115.2 |
| 2023 Q1 | 15,940 | 0 | 0 | 0.0 |
| 2022 Q4 | 13,085 | 0 | 0 | 0.0 |
| 2022 Q3 | 14,329 | 0 | 0 | 0.0 |
| 2022 Q2 | 13,975 | 1 | 0 | 71.6 |
| 2022 Q1 | 12,624 | 0 | 0 | 0.0 |
| 2021 Q4 | 13,009 | 0 | 0 | 0.0 |
| 2021 Q3 | 14,202 | 0 | 0 | 0.0 |
| 2021 Q2 | 12,771 | 1 | 0 | 78.3 |
| 2021 Q1 | 12,638 | 0 | 0 | 0.0 |
| 2020 Q4 | 12,948 | 4 | 1 | 308.9 |
| 2020 Q3 | 12,237 | 0 | 0 | 0.0 |
| 2020 Q2 | 11,975 | 1 | 0 | 83.5 |
| 2020 Q1 | 14,505 | 0 | 0 | 0.0 |
| 2019 Q4 | 15,090 | 0 | 0 | 0.0 |
| 2019 Q3 | 14,367 | 0 | 0 | 0.0 |
| 2019 Q2 | 13,791 | 1 | 0 | 72.5 |
| 2019 Q1 | 13,926 | 0 | 0 | 0.0 |
| 2018 Q4 | 11,806 | 0 | 0 | 0.0 |
| 2018 Q3 | 12,636 | 0 | 0 | 0.0 |
| 2018 Q2 | 12,485 | 0 | 0 | 0.0 |
| 2018 Q1 | 13,213 | 0 | 0 | 0.0 |
| 2017 Q4 | 14,645 | 2 | 0 | 136.6 |
| 2017 Q3 | 14,506 | 0 | 0 | 0.0 |
| 2017 Q2 | 12,861 | 1 | 0 | 77.8 |
| 2017 Q1 | 12,521 | 3 | 2 | 239.6 |
| 2016 Q4 | 5,541 | 0 | 0 | 0.0 |
| 2016 Q3 | 17,812 | 0 | 0 | 0.0 |
| 2016 Q2 | 19,142 | 2 | 0 | 104.5 |
| 2016 Q1 | 19,320 | 0 | 0 | 0.0 |
| 2015 Q4 | 18,119 | 2 | 1 | 110.4 |
| 2015 Q3 | 20,195 | 0 | 0 | 0.0 |
| 2015 Q2 | 16,976 | 1 | 0 | 58.9 |
| 2015 Q1 | 21,429 | 0 | 0 | 0.0 |
| 2014 Q4 | 18,609 | 0 | 0 | 0.0 |
| 2014 Q3 | 16,992 | 0 | 0 | 0.0 |
| 2014 Q2 | 17,586 | 2 | 0 | 113.7 |
| 2014 Q1 | 14,836 | 0 | 0 | 0.0 |
| 2013 Q4 | 15,651 | 1 | 1 | 63.9 |
| 2013 Q3 | 14,236 | 8 | 2 | 562.0 |
| 2013 Q2 | 16,439 | 0 | 0 | 0.0 |
| 2013 Q1 | 16,680 | 0 | 0 | 0.0 |
| 2012 Q4 | 14,840 | 0 | 0 | 0.0 |
| 2012 Q3 | 15,492 | 6 | 2 | 387.3 |
| 2012 Q2 | 15,566 | 0 | 0 | 0.0 |
| 2012 Q1 | 14,511 | 0 | 0 | 0.0 |
| 2011 Q4 | 13,628 | 1 | 0 | 73.4 |
| 2011 Q3 | 13,790 | 0 | 0 | 0.0 |
| 2011 Q2 | 14,585 | 1 | 0 | 68.6 |
| 2011 Q1 | 14,233 | 7 | 2 | 491.8 |
| 2010 Q4 | 14,507 | 0 | 0 | 0.0 |
| 2010 Q3 | 14,448 | 2 | 1 | 138.4 |
| 2010 Q2 | 15,677 | 0 | 0 | 0.0 |
| 2010 Q1 | 15,649 | 5 | 0 | 319.5 |
| 2009 Q4 | 16,638 | 0 | 0 | 0.0 |
| 2009 Q3 | 16,932 | 0 | 0 | 0.0 |
| 2009 Q2 | 15,953 | 2 | 0 | 125.4 |
| 2009 Q1 | 14,488 | 0 | 0 | 0.0 |
| 2008 Q4 | 16,662 | 1 | 0 | 60.0 |
| 2008 Q3 | 15,119 | 1 | 0 | 66.1 |
| 2008 Q2 | 16,618 | 0 | 0 | 0.0 |
| 2008 Q1 | 9,792 | 0 | 0 | 0.0 |
| 2007 Q4 | 10,381 | 1 | 0 | 96.3 |
| 2007 Q3 | 5,142 | 1 | 0 | 194.5 |
| 2007 Q2 | 650 | 0 | 0 | 0.0 |
| 2007 Q1 | 1,928 | 0 | 0 | 0.0 |
Reportable incidents
4 on file2025 · 1 incident
2019 · 1 incident
EE was putting samples into the shaker machine and felt pop in lower back. EE was placed on restricted duty.
2013 · 1 incident
Customer's Truck Driver slipped exiting truck falling onto scales.
2009 · 1 incident
Owner/Operator Customer weighed loaded truck at office scales & parked truck off scales. He came in office, signed weigh ticket, walked back to truck. After tarping trailer, apparently dies of a heart attack. Continuous conversations with MSHA about the death.
The full compliance file on Chico Quarry
A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.