Maintenance Man fatality at Sierra Rock Products, CA, March 10, 1984

at 7:15 AM

On March 10, 1984, a maintenance man was fatally injured in a machinery accident at Sierra Rock Products, CA.

Sierra Rock Products · Surface · Metal/Non-Metal

Operator: Sierra Rock Products (James D Hatler)

Tuolumne County, CA

Classification MACHINERY

Type Caught in, under or between two or more moving objects

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Investigator narrative

#1 DECEASED FAILED TO FOLLOW STANDARD LOCK OUT PROCEDURE #2 WARNING HORN NOT OPERABLE #3 OPERATOR FAILED TO CLEAR ALL MACHINES BEFORE STARING PLANT. CRUSHED BETWEEN ROLLS FROM FEET TO CHEST.

Record details

Activity at time of incident: Machine Maintenance
Subunit / location: MILL OPERATION/PREPARATION PLANT
Accident type: Caught in, under or between two or more moving objects
Source of injury: MACHINE-MILL,CLEANING PLT
Nature of injury: MULTIPLE INJURIES
Body part affected: MULTIPLE PARTS (MORE THAN ONE MAJOR)
Total mining experience: 2 years
Experience at this mine: 2 years
Experience in this job: 15 years
Degree of injury: FATALITY

Related fatalities

Same operator

December 27, 1991 · Haul/Off Road/Coal/Ore/Pit/Quarry/Rock/Rubber Tire Truck Driver · Sierra Rock Products, CA
February 23, 1991 · Front-End Loader · Sierra Rock Products, CA

Same classification

July 1, 2026 · Electrician · Warrior Met Coal BC, LLC, AL
May 20, 2026 · Maintenance Man · Pine Branch Mining LLC, KY
March 12, 2026 · Maintenance Man · Kennecott Utah Copper LLC, UT
March 5, 2026 · Continuous Miner Operator · Patton Mining LLC, IL
January 6, 2026 · Maintenance Man · National Cement Company Of California Inc, CA

Same year

December 27, 1984 · Belt Cleaner · Mosaic Potash Carlsbad Inc, NM
December 27, 1984 · Belt Cleaner · Mosaic Potash Carlsbad Inc, NM
December 21, 1984 · Warehouseman · Everest Minerals Corp, TX
December 21, 1984 · Outside Foreman · Pine Bluff Sand & Gravel Company, AR
December 21, 1984 · Mine Manager · Kenellis Energies Inc, IL

Verify on MSHA

Every record on this page mirrors what MSHA publishes under its Open Government Data program, refreshed weekly. MSHA does not publish per-accident URLs (the Accidents data is distributed as a single bulk file), so this is how to retrieve the source for the specific record below:

Accident record: Download MSHA Accidents.zip then search for Document number 219840830035 (the unique key per MSHA Form 7000-1)
Mine record: MSHA Mine Data Retrieval System and search by Mine ID 0403489
All MSHA datasets: Open Government Data program directory covering Accident, Mines, Inspections, Violations, etc.

Source: US Mine Safety and Health Administration (MSHA) · Document 219840830035 · Mine ID 0403489 Trainer view →