Gerken Materials Inc. · Over-exertion in pulling or pushing objects
Employee was climbing up ladder to a conveyor and felt a shoulder pop. After being checked by medical it was determined that their shoulder dislocated.
Clinton Plant Metal/Non-Metal
Gerken Materials Inc.
· Surface
Controlled by
Brent Gerken; Michael J Gerken
Clinton,
Washtenaw County,
MI
·
Active
MSHA Mine ID: 2002886
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- Fatalities
- 0
- Total incidents
- 3
- Years on record
- 2019–2026
- Latest incident
- Feb 2026
Compliance record
MSHA citations since 2000
88
citations
24
significant & substantial
$28,691
proposed penalties
$15,792
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 | 3,969 | 0 | 0 | 0.0 |
| 2025 Q3 | 4,554 | 0 | 0 | 0.0 |
| 2025 Q2 | 4,023 | 0 | 0 | 0.0 |
| 2025 Q1 | 2,899 | 0 | 0 | 0.0 |
| 2024 Q4 | 4,070 | 0 | 0 | 0.0 |
| 2024 Q3 | 4,630 | 0 | 0 | 0.0 |
| 2024 Q2 | 3,920 | 2 | 0 | 510.2 |
| 2024 Q1 | 2,841 | 1 | 0 | 352.0 |
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.
Reportable incidents
3 on file2026 · 1 incident
2019 · 2 incidents
June 29, 2019
MI · Metal/Non-Metal
crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger
MACHINERY
Gerken Materials Inc. · Over-exertion (Not Elsewhere Classified)
Employee was operating the dragline and turned to dump bucket and felt machine tilt towards water and panicked and jumped off on to ground and twisted left knee. Dragline did partially go into water on one side.
June 4, 2019
MI · Metal/Non-Metal
barge/boat/dredge/towbarge/towboat/leach operator, riverman, deck hand
SLIP OR FALL OF PERSON
Gerken Materials Inc. · Fall to the walkway or working surface
EMPLOYEE WAS CHECKING A PLUGGED SAND PUMP AND STEPPED ON A HATCH COVER THAT WAS NOT SECURED, FALLING DOWN AND SCRAPED FOREARM, SHIN AND TWISTED LOWER BACK. EMPLOYEE CONTINUED TO WORK UNTIL 06/19/2019 WHEN STARTED HAVING PROBLEMS WITH LEFT SHOULDER AND HAD IT CHECKED AND WAS TOLD IT WAS A SPRAIN AND PUT ON RESTRICTIONS OF RIGHT HAND USE ONLY.