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Cal Rock Products LLC Metal/Non-Metal

Cal Rock Products LLC · Surface

Controlled by David P Grimsley

Hollister, San Benito County, CA · Intermittent

MSHA Mine ID: 0400111

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Email me when a new MSHA incident is filed at Cal Rock Products LLC.

Fatalities: 0
Total incidents: 6
Years on record: 2000–2020
Latest incident: Jun 2020

Compliance record

MSHA citations since 2001

167

citations

significant & substantial

$45,154

proposed penalties

$36,723

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	5,952	0	0	0.0
2025 Q3	6,144	0	0	0.0
2025 Q2	6,336	0	0	0.0
2025 Q1	6,048	2	0	330.7
2024 Q4	5,856	0	0	0.0
2024 Q3	6,048	3	1	496.0
2024 Q2	6,144	0	0	0.0
2024 Q1	5,932	0	0	0.0

Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.

No fatalities recorded at this mine.

Reportable incidents

6 on file

2020 · 1 incident

June 13, 2020 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON

Cal Rock Products LLC · Fall from machine

Employee was unloading a supply truck. Employee was on the flat bed trailer and when employee jumped off the trailer employee injured knee.

2019 · 1 incident

August 13, 2019 CA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer DISORDERS (REPEATED TRAUMA)

Cal Rock Products LLC · (Not Elsewhere Classified)

Annual hearing test has changed. Doctor has advised employee to have a hearing aid. We have submitted the request to our workman's comp insurance to take care of employee.

2017 · 2 incidents

April 1, 2017 CA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator EXPLODING VESSELS UNDER PRESSURE

Cal Rock Products LLC · (Not Elsewhere Classified)

Employee were doing road maintenance with a hot oil pull behind tank trailer when an explosion occurred. Employee went to doctor on 4-18-17. Placed on restricted duty.

April 1, 2017 CA · Metal/Non-Metal safety director EXPLODING VESSELS UNDER PRESSURE

Cal Rock Products LLC · Contact with hot objects or substances

Employees were doing road maintenance with hot oil pull behind tank trailer when an explosion occurred.

2015 · 1 incident

October 12, 2015 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON

Cal Rock Products LLC · Fall from machine

Employee slipped from fuel truck and injured his head, collar bone & ribs.

2000 · 1 incident

August 12, 2000 CA · Metal/Non-Metal mason SLIP OR FALL OF PERSON

San Benito Aggregates Inc · Over-exertion (Not Elsewhere Classified)

EE WAS LAYING BRICK IN KILN WHEN HE STOOD UP TO MOVE A SHORT DISTANCE. HIS RIGHT FOOT SLIPPED & HE TWISTED HIS KNEE