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Dunn Mill Metal/Non-Metal

Barstow, San Bernardino County, CA  ·  Intermittent
MSHA Mine ID: 0401097

Dunn Mill has $8K in proposed MSHA penalties and $1K outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
10
Years on record
1983–1992
Latest incident
Oct 1992
Compliance record
MSHA citations since 2000
70
citations
11
significant & substantial
$8,451
proposed penalties
$7,357
paid to date
87% of proposed penalties paid to date, a $1,094 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
34
inspections on record
522
inspection hours
n/a
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.
Rate withheld: 522 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Dunn Mill has $8K in proposed MSHA penalties and $1K outstanding across 0 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.
$8K
proposed penalties
$8K
current assessed
$7K
paid to date
$1K
outstanding
70 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-03-18.
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 400 0 0 0.0
2025 Q3 400 0 0 0.0
2025 Q2 240 0 0 0.0
2025 Q1 200 0 0 0.0
2024 Q4 240 2 0 8333.3
2024 Q3 240 0 0 0.0
2024 Q2 400 0 0 0.0
2024 Q1 48 3 0 62500.0
Show 54 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 20 0 0 0.0
2023 Q3 20 0 0 0.0
2023 Q2 154 0 0 0.0
2023 Q1 1,768 2 0 1131.2
2022 Q4 2,316 0 0 0.0
2022 Q3 2,616 0 0 0.0
2022 Q2 2,601 2 1 768.9
2022 Q1 2,803 0 0 0.0
2021 Q4 3,985 5 0 1254.7
2021 Q3 6,104 1 1 163.8
2021 Q2 4,141 0 0 0.0
2021 Q1 4,792 0 0 0.0
2020 Q4 4,280 0 0 0.0
2020 Q3 5,720 0 0 0.0
2020 Q2 4,527 0 0 0.0
2020 Q1 409 0 0 0.0
2019 Q4 1,540 7 2 4545.5
2019 Q1 82 0 0 0.0
2018 Q4 2,480 1 0 403.2
2018 Q2 4,853 7 1 1442.4
2018 Q1 1,192 0 0 0.0
2017 Q3 998 0 0 0.0
2017 Q2 1,511 0 0 0.0
2017 Q1 1,470 0 0 0.0
2007 Q2 2,928 0 0 0.0
2007 Q1 777 0 0 0.0
2006 Q4 1,591 0 0 0.0
2006 Q3 1,449 4 0 2760.5
2006 Q2 1,573 0 0 0.0
2006 Q1 1,286 0 0 0.0
2005 Q4 1,286 0 0 0.0
2005 Q3 1,441 0 0 0.0
2005 Q2 1,367 2 0 1463.1
2005 Q1 1,524 0 0 0.0
2004 Q4 1,006 0 0 0.0
2004 Q3 1,539 0 0 0.0
2004 Q2 1,570 3 0 1910.8
2004 Q1 1,385 0 0 0.0
2003 Q4 1,270 6 0 4724.4
2003 Q3 1,319 0 0 0.0
2003 Q2 1,482 3 0 2024.3
2003 Q1 1,474 0 0 0.0
2002 Q4 1,223 1 1 817.7
2002 Q3 1,415 0 0 0.0
2002 Q2 1,524 3 2 1968.5
2002 Q1 1,498 0 0 0.0
2001 Q4 1,298 4 1 3081.7
2001 Q3 1,355 5 0 3690.0
2001 Q2 1,417 0 0 0.0
2001 Q1 1,510 0 0 0.0
2000 Q4 1,296 0 0 0.0
2000 Q3 1,395 0 0 0.0
2000 Q2 1,498 4 0 2670.2
2000 Q1 1,586 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

10 on file

1992 · 2 incidents

October 29, 1992 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman OTHER
American Borate Company · Struck by flying object

EMPLOYEE WAS CLEANING UP DUSTY MATERIAL AT THE 54IN BUCKET ELEVATOR PIT WITH A SHOVEL WIND BLEW MATERIAL INTO HIS LEFT EYE CAUSING A POSSIBLE SCRATCH

February 18, 1992 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
American Borate Company · Fall from piled material

EMPLOYEE CLAIMS HE WAS ON TOP OF BAG STOCK PILE INSTEAD OF CLIMBING DOWN HE SAYS HE JUMPED DOWN ABOUT 10FT & STRUCK HIS LEFT SIDE ON LOADER BUCKET

1991 · 1 incident

April 29, 1991 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
American Borate Company · Rubbed or abraded

SWEEPING UP PUMICE FINES BLEW IN EYES RUBBED EYE SCRATCHED EYE

1990 · 3 incidents

July 25, 1990 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman OTHER
American Borate Company · Absorption of radiations, caustics, toxic and noxious substances

HE SAYS HE IS NOT SURE WHERE IT HAPPENED OR IF IT HAPPENED HERE SOME KIND OF BUG BITE 1IN BELOW THE ANKLE RT FOOT HE WENT TO DOC & RECEIVED 10 DAYS OFF

May 7, 1990 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
American Borate Company · Struck by flying object

EMPLOYEE WAS KNOCKING ROLL OFF MILL JOURNAL WITH A HAMMER CHIP OF METAL FLEW OFF STRICKING HIM ON RIGHT HAND

April 6, 1990 CA · Metal/Non-Metal HANDLING OF MATERIALS
American Borate Company · Over-exertion in lifting objects

EMPL WAS DUMPING TALC INTO GRIZZLEY WHEN BIG ROCK WAS LEFT ON GRIZZLY & EMPL TRIED TO REMOVE IT B Y LIFTING IT INTO LOADER BUCKET STRAINING BACK.

1989 · 1 incident

October 10, 1989 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
American Borate Company · Struck by... (Not Elsewhere Classified)

CHANGING ROLLERS AT MILL ROLLER CAME BACK AND STRUCK EMP R HAND

1988 · 1 incident

April 13, 1988 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
American Borate Company · Over-exertion (Not Elsewhere Classified)

EMPL WAS STACKING 50 LBS. GAGS CONTAINING ZIOLITE MATERIAL OFF OF CONVEY BELT ONTO PALLET. HE TURNED WRONG WAY TWISTING & HURTING LOWER BACK.

1986 · 1 incident

April 3, 1986 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
American Borate Company · Fall to lower level, (Not Elsewhere Classified)

EMPLOYEE WAS TI1HTNING JOURNAL CAP ON RAYMOND MILL WRENCH SLIPPED AND HE FELL 5 TO 6 FT TO THE FLOOR STRIKING COCCYX TAILBONE.

1983 · 1 incident

January 7, 1983 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman DISORDERS (REPEATED TRAUMA)
American Borate Company · Over-exertion (Not Elsewhere Classified)

EMPLOYEE STATES THAT SHE WAS SHOVELING AROUND R-SILOS AND FELT PAINS IN HER RIGHT WRIST AND LOWER BACK

For insurers, brokers, and safety consultants

The full compliance file on Dunn Mill

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.

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