At 7:00 AM employee injured his shoulder while turning a valve on the plant clarifier.
Morris Ravine Mine Metal/Non-Metal
Mineral Resources LLC
· Surface
Controlled by
MRLLC Investors LTD
oroville,
Butte County,
CA
·
Active
MSHA Mine ID: 0405407
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- Fatalities
- 0
- Total incidents
- 7
- Years on record
- 2001–2014
- Latest incident
- May 2014
Compliance record
MSHA citations since 2001
285
citations
58
significant & substantial
$132,491
proposed penalties
$90,007
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 | 3,013 | 3 | 0 | 995.7 |
| 2025 Q3 | 4,554 | 0 | 0 | 0.0 |
| 2025 Q2 | 4,603 | 3 | 0 | 651.7 |
| 2025 Q1 | 1,877 | 3 | 0 | 1598.3 |
| 2024 Q4 | 2,766 | 0 | 0 | 0.0 |
| 2024 Q3 | 3,404 | 0 | 0 | 0.0 |
| 2024 Q2 | 3,051 | 1 | 0 | 327.8 |
| 2024 Q1 | 2,471 | 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
7 on file2014 · 1 incident
May 4, 2014
CA · Metal/Non-Metal
warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator
HANDLING OF MATERIALS
Mineral Resources LLC · Over-exertion in pulling or pushing objects
2011 · 1 incident
Mineral Resources LLC · Fall from machine
Employee was climbing over a conveyor belt and slipped and jumped down aprox 4' to concrete slab, resulting in a fracture to the heel.
2009 · 1 incident
August 23, 2009
CA · Metal/Non-Metal
warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator
OTHER
Mineral Resources LLC · (Not Elsewhere Classified)
Unknown back strain.
2008 · 1 incident
May 24, 2008
CA · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
SLIP OR FALL OF PERSON
Mineral Resources LLC · Fall from machine
While working on the screen in the plant, he slipped and landed on his back side.
2003 · 1 incident
August 25, 2003
CA · Metal/Non-Metal
bulldozer operator, universal operator, heavy equipment operator, operating engineer
HANDLING OF MATERIALS
Mineral Resources LLC · Over-exertion in lifting objects
WHILE SHOVELING SAND TWISTED TO THE SIDE AND STRAINED BACK (LUMBAR STRAIN)
2002 · 1 incident
Mineral Resources LLC · Struck against stationary object
HIT HEAD WITH POST DRIVER, TREATED AT SITE OFFERED TO GO TO MD AND REFUSED.
2001 · 1 incident
October 16, 2001
CA · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
SLIP OR FALL OF PERSON
Mineral Resources LLC · Fall onto or against objects
WORKER WAS REMOVING FORMS AND STUMBLED OVER A ROCK. CAUGHT FALL WITH LEFT HAND, SPRAINING WRIST.