Mining Incidents

Patterson Mine and Mill Metal/Non-Metal

Controlled by Imerys S A
Kings Mountain, Cleveland County, NC  ·  Active
MSHA Mine ID: 3100274

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Fatalities
0
Total incidents
6
Years on record
2000–2025
Latest incident
Dec 2025
Compliance record
MSHA citations since 2000
31
citations
7
significant & substantial
$3,880
proposed penalties
$3,880
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 1,771 1 0 564.7
2025 Q3 2,411 0 0 0.0
2025 Q1 3,452 1 0 289.7
2024 Q3 2,706 0 0 0.0
2024 Q2 2,577 0 0 0.0
2024 Q1 2,401 0 0 0.0
2023 Q4 1,560 0 0 0.0
2023 Q2 2,172 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

2025 · 2 incidents

December 23, 2025 NC · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech POWERED HAULAGE
Imerys Mica Kings Mountain Inc. · Struck by powered moving object

A compressed system was installed. While energizing with compressed air, an air leak occurred in the piping. The failure caused the piping and the receiver tank to collapse. While escaping the area, an employee was struck in the back by a manlift, causing them to fall. During the fall, they struck their head and sustained a head laceration that required stitches.

2024 · 1 incident

June 21, 2024 NC · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Imerys Mica Kings Mountain Inc. · Over-exertion in lifting objects

Employee states was bagging 50 lb paper bags, on the 8th row of the pallet when rotating to stack the bag when EE felt pain. The pain felt to have come from EE's back, to neck, to shoulder. Management wasn't aware that it was work related until employee brought a doctor's note on 7/1/24.

2022 · 1 incident

September 26, 2022 NC · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator OTHER
Imerys Mica Kings Mountain Inc. · (Not Elsewhere Classified)

Death due to natural causes. Pulmonary Embolism

2001 · 1 incident

January 18, 2001 NC · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Oglebay Norton Specialty Mineral · Struck by... (Not Elsewhere Classified)

EE WAS CLEANING OUT A SMALL BIN UNDER A DUST COLLECTOR WHERE MICA MATERIAL HAD PACKED OFF ABOVE THE ROTARY VALVE. HE PLACED HIS ARM AND HAND THROUGH A SMALL OPENING IN THE BIN TO STIR AND DISL ODGE THE MATERIAL AND HIS RIGHT HAND FINGER CONTACTED ROTARY VALVE CAUSING A PARTIAL AMPUTATION ABOVE 1ST KNUCKLE TO INDEX & MIDDLE FINGERS. EE FAILED TO SHUT OFF AND LOCKOUT THE ROTARY VALVE

2000 · 1 incident

March 4, 2000 NC · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
Oglebay Norton Specialty Mineral · Struck by... (Not Elsewhere Classified)

EE WAS BREAKING DOWN A 4' X 4' CARDBOARD BOX TO DISPOSE IN THE DUMPSTER. WHEN HE PULLED THE SIDE PANEL APART AT THE CORNER HE CAUGHT HIS LEFT THUMB ON AN OPEN STAPLE CAUSING AN INCH LONG LACER ATION. THE LACARATION REQUIRED SUTURES TO CLOSE IT.