San Benito Supply · Fall to the walkway or working surface
While picking up a small railing, they slipped and fell at the welding deck. Their left lower side of their back is the affected area with pain radiating into left leg.
Hidden Canyon Quarry Metal/Non-Metal
San Benito Supply
· Surface
Controlled by
Mark Schipper; Peter Schipper
Greenfield,
Monterey County,
CA
·
Active
MSHA Mine ID: 0405653
Hidden Canyon Quarry has $253K in proposed MSHA penalties and $0 outstanding across 28 contested dockets, plus health sampling and the full incident record.
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Email me when a new MSHA incident is filed at Hidden Canyon Quarry.
- Fatalities
- 0
- Total incidents
- 14
- Years on record
- 2011–2026
- Latest incident
- Jun 2026
Compliance record
MSHA citations since 2006
242
citations
69
significant & substantial
$253,284
proposed penalties
$164,557
paid to date
65% of proposed penalties paid to date, a $88,727 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2006
56
inspections on record
1,065
inspection hours
22.7
citations per 100 inspection hours
ⓘ
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.242 citations across 1,065 inspection hours.
Source: MSHA inspections data, updated weekly.
Hidden Canyon Quarry has $253K in proposed MSHA penalties and $0 outstanding across 28 contested dockets.
Penalty disposition
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.$253K
proposed penalties
$165K
current assessed
$165K
paid to date
$0
outstanding
238 assessments are final orders; 28 contested dockets.
As of the most recent assessment on 2026-01-13.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
See also
the operator's enforcement record
Quarterly safety rates
ⓘ
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.Citations per million employee-hours, as reported to MSHA
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2025 Q4 | 7,439 | 0 | 0 | 0.0 |
| 2025 Q3 | 8,899 | 0 | 0 | 0.0 |
| 2025 Q2 | 8,947 | 8 | 2 | 894.2 |
| 2025 Q1 | 7,244 | 0 | 0 | 0.0 |
| 2024 Q4 | 6,814 | 2 | 0 | 293.5 |
| 2024 Q3 | 6,994 | 11 | 5 | 1572.8 |
| 2024 Q2 | 7,403 | 0 | 0 | 0.0 |
| 2024 Q1 | 6,867 | 1 | 0 | 145.6 |
Show 73 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 6,276 | 0 | 0 | 0.0 |
| 2023 Q3 | 6,987 | 6 | 0 | 858.7 |
| 2023 Q2 | 5,494 | 0 | 0 | 0.0 |
| 2023 Q1 | 4,335 | 0 | 0 | 0.0 |
| 2022 Q4 | 4,971 | 0 | 0 | 0.0 |
| 2022 Q3 | 5,056 | 0 | 0 | 0.0 |
| 2022 Q2 | 4,145 | 3 | 0 | 723.8 |
| 2022 Q1 | 3,981 | 8 | 3 | 2009.5 |
| 2021 Q4 | 3,392 | 0 | 0 | 0.0 |
| 2021 Q3 | 4,802 | 0 | 0 | 0.0 |
| 2021 Q2 | 5,184 | 0 | 0 | 0.0 |
| 2021 Q1 | 4,185 | 0 | 0 | 0.0 |
| 2020 Q4 | 4,740 | 3 | 1 | 632.9 |
| 2020 Q3 | 4,246 | 0 | 0 | 0.0 |
| 2020 Q2 | 3,320 | 4 | 1 | 1204.8 |
| 2020 Q1 | 4,429 | 9 | 1 | 2032.1 |
| 2019 Q4 | 4,967 | 0 | 0 | 0.0 |
| 2019 Q3 | 6,038 | 2 | 0 | 331.2 |
| 2019 Q2 | 5,232 | 0 | 0 | 0.0 |
| 2019 Q1 | 4,472 | 3 | 0 | 670.8 |
| 2018 Q4 | 5,138 | 0 | 0 | 0.0 |
| 2018 Q3 | 6,029 | 0 | 0 | 0.0 |
| 2018 Q2 | 5,551 | 5 | 0 | 900.7 |
| 2018 Q1 | 5,313 | 0 | 0 | 0.0 |
| 2017 Q4 | 5,203 | 2 | 0 | 384.4 |
| 2017 Q3 | 6,332 | 0 | 0 | 0.0 |
| 2017 Q2 | 4,725 | 0 | 0 | 0.0 |
| 2017 Q1 | 3,176 | 6 | 2 | 1889.2 |
| 2016 Q4 | 4,114 | 11 | 2 | 2673.8 |
| 2016 Q3 | 4,891 | 5 | 3 | 1022.3 |
| 2016 Q2 | 4,609 | 0 | 0 | 0.0 |
| 2016 Q1 | 3,495 | 3 | 0 | 858.4 |
| 2015 Q4 | 2,963 | 6 | 2 | 2025.0 |
| 2015 Q3 | 4,431 | 4 | 2 | 902.7 |
| 2015 Q2 | 4,552 | 47 | 24 | 10325.1 |
| 2015 Q1 | 3,664 | 4 | 0 | 1091.7 |
| 2014 Q4 | 3,227 | 0 | 0 | 0.0 |
| 2014 Q3 | 3,462 | 17 | 6 | 4910.5 |
| 2014 Q2 | 3,786 | 0 | 0 | 0.0 |
| 2014 Q1 | 3,723 | 0 | 0 | 0.0 |
| 2013 Q4 | 3,828 | 0 | 0 | 0.0 |
| 2013 Q3 | 3,141 | 0 | 0 | 0.0 |
| 2013 Q2 | 3,042 | 2 | 1 | 657.5 |
| 2013 Q1 | 3,499 | 0 | 0 | 0.0 |
| 2012 Q4 | 2,124 | 0 | 0 | 0.0 |
| 2012 Q3 | 5,323 | 0 | 0 | 0.0 |
| 2012 Q2 | 3,986 | 6 | 2 | 1505.3 |
| 2012 Q1 | 3,892 | 0 | 0 | 0.0 |
| 2011 Q4 | 3,806 | 0 | 0 | 0.0 |
| 2011 Q3 | 3,978 | 0 | 0 | 0.0 |
| 2011 Q2 | 4,570 | 1 | 0 | 218.8 |
| 2011 Q1 | 1,888 | 14 | 5 | 7415.3 |
| 2010 Q4 | 2,689 | 12 | 3 | 4462.6 |
| 2010 Q3 | 4,593 | 0 | 0 | 0.0 |
| 2010 Q2 | 3,541 | 4 | 1 | 1129.6 |
| 2010 Q1 | 2,052 | 0 | 0 | 0.0 |
| 2009 Q4 | 2,810 | 8 | 1 | 2847.0 |
| 2009 Q3 | 3,392 | 0 | 0 | 0.0 |
| 2009 Q2 | 2,726 | 2 | 0 | 733.7 |
| 2009 Q1 | 1,813 | 3 | 0 | 1654.7 |
| 2008 Q4 | 4,564 | 0 | 0 | 0.0 |
| 2008 Q3 | 4,003 | 0 | 0 | 0.0 |
| 2008 Q2 | 7,167 | 4 | 0 | 558.1 |
| 2008 Q1 | 3,396 | 0 | 0 | 0.0 |
| 2007 Q4 | 4,620 | 4 | 1 | 865.8 |
| 2007 Q3 | 7,188 | 7 | 1 | 973.8 |
| 2007 Q2 | 6,598 | 0 | 0 | 0.0 |
| 2007 Q1 | 2,904 | 0 | 0 | 0.0 |
| 2006 Q4 | 5,869 | 0 | 0 | 0.0 |
| 2006 Q3 | 8,488 | 1 | 0 | 117.8 |
| 2006 Q2 | 6,826 | 0 | 0 | 0.0 |
| 2006 Q1 | 3,199 | 0 | 0 | 0.0 |
| 2005 Q4 | 2,437 | 0 | 0 | 0.0 |
No fatalities recorded at this mine.
Reportable incidents
14 on file2026 · 1 incident
2025 · 1 incident
October 16, 2025
CA · Metal/Non-Metal
dry screening plant operator, screen house operator
SLIP OR FALL OF PERSON
San Benito Supply · Fall from ladders
while climbing on the ladder, lost footing and slipped off ladder, falling to the ground landing on ankle, and backside
2023 · 3 incidents
October 5, 2023
CA · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
MACHINERY
San Benito Supply · Struck by flying object
a rock flew out of the plant and struck miner on the L side of the face, casing blunt eye trauma, orbital floor closed fracture. Laceration of eyelid. no Eye injury.
March 10, 2023
CA · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
SLIP OR FALL OF PERSON
San Benito Supply · Fall to the walkway or working surface
slipped on wet surface (raining) pain on backside
January 18, 2023
CA · Metal/Non-Metal
bulldozer operator, universal operator, heavy equipment operator, operating engineer
MACHINERY
San Benito Supply · Struck against a moving object
Miner drove bulldozer over uneven ground, EE felt a pinch in the buttock area. The compression caused bruised tailbone.
2022 · 2 incidents
February 23, 2022
CA · Metal/Non-Metal
bulldozer operator, universal operator, heavy equipment operator, operating engineer
HANDLING OF MATERIALS
San Benito Supply · Over-exertion in lifting objects
L shoulder sternoclavicular sprain, R shoulder strain. Worker lifting tool above shoulder, sustained pinch nerve/strain/pain
San Benito Supply · Over-exertion in lifting objects
While lifting an item, felt pain in groin area. Swelling 3 days later. Reported injury on 2/22/22.
2020 · 1 incident
San Benito Supply · Caught in, under or between a moving and a stationary object
while removing a gear box, left finger was pinched, causing a contusion, laceration, and fracture of proximal phalanx.
2019 · 3 incidents
San Benito Supply · Struck by flying object
Miner was grinding metal, debris flew into right eye, resulting in irritation
San Benito Supply · Fall from ladders
While on ladder, Miner was using a drill to attach screws to rubber patch, ladder slipped on wet floor and miner fell on L wrist.
San Benito Supply · (Not Elsewhere Classified)
Audiometric test on 3/25 indicating a recordable hearing shift, received the report on 4/5/2019, shared findings with worker on 4/8. Retest is scheduled on 4/16/2019.
2016 · 1 incident
San Benito Supply · Caught in, under or between a moving and a stationary object
while moving a motor onto the motor plate, the plate slipped and pinched Miner's right hand, causing laceration and minor fracture
2015 · 1 incident
March 18, 2015
CA · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
POWERED HAULAGE
San Benito Supply · Caught in, under or between a moving and a stationary object
EE failed to chock tire or de-energize tractor prior to attempting repairs. Tractor rolled forward, tire rolled over foot of EE
2011 · 1 incident
San Benito Supply · Fall onto or against objects
EE slipped hitting his head on a metal guard.
For insurers, brokers, and safety consultants
The full compliance file on Hidden Canyon 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.