Mining Incidents

Hidden Canyon Quarry Metal/Non-Metal

San Benito Supply · Surface
Greenfield, Monterey County, CA  ·  Active
MSHA Mine ID: 0405653

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Fatalities
0
Total incidents
13
Years on record
2011–2025
Latest incident
Oct 2025
Compliance record
MSHA citations since 2006
240
citations
69
significant & substantial
$253,284
proposed penalties
$164,557
paid to date
Source: MSHA violations data, updated weekly.
Quarterly safety rates
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
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

13 on file

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

February 18, 2022 CA · Metal/Non-Metal miner, prospector, nec HANDLING OF MATERIALS
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

August 17, 2020 CA · Metal/Non-Metal groundman, yardman HANDLING OF MATERIALS
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

April 30, 2019 CA · Metal/Non-Metal groundman, yardman MACHINERY
San Benito Supply · Struck by flying object

Miner was grinding metal, debris flew into right eye, resulting in irritation

April 18, 2019 CA · Metal/Non-Metal groundman, yardman SLIP OR FALL OF PERSON
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.

April 5, 2019 CA · Metal/Non-Metal groundman, yardman DISORDERS (REPEATED TRAUMA)
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

August 31, 2016 CA · Metal/Non-Metal groundman, yardman HANDLING OF MATERIALS
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