Mining Incidents

Morris Ravine Mine Metal/Non-Metal

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 file

2014 · 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

At 7:00 AM employee injured his shoulder while turning a valve on the plant clarifier.

2011 · 1 incident

March 18, 2011 CA · Metal/Non-Metal ledgeman/hand, quarry man SLIP OR FALL OF PERSON
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

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.