Gerken Materials Inc · Fall onto or against objects
Employee was exiting the scale house office and slipped on ice and fell on steps and fractured four ribs in their back.
Gerken Materials- Hillsdale Plant Metal/Non-Metal
Gerken Materials Inc
· Surface
Controlled by
Brent Gerken; Michael J Gerken
HILLSDALE,
Hillsdale County,
MI
·
Active
MSHA Mine ID: 2002344
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- Fatalities
- 0
- Total incidents
- 6
- Years on record
- 2000–2026
- Latest incident
- Feb 2026
Compliance record
MSHA citations since 2001
54
citations
14
significant & substantial
$8,293
proposed penalties
$8,293
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 | 2,871 | 0 | 0 | 0.0 |
| 2025 Q3 | 3,647 | 0 | 0 | 0.0 |
| 2025 Q2 | 3,685 | 1 | 0 | 271.4 |
| 2025 Q1 | 2,498 | 0 | 0 | 0.0 |
| 2024 Q4 | 3,206 | 0 | 0 | 0.0 |
| 2024 Q3 | 3,407 | 0 | 0 | 0.0 |
| 2024 Q2 | 3,519 | 0 | 0 | 0.0 |
| 2024 Q1 | 2,685 | 3 | 0 | 1117.3 |
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 file2026 · 1 incident
2019 · 2 incidents
November 5, 2019
MI · Metal/Non-Metal
barge/boat/dredge/towbarge/towboat/leach operator, riverman, deck hand
HANDLING OF MATERIALS
Gerken Materials Inc · Struck against stationary object
Employee stated that the guard from the dredge winch was removed to replace the cable, at some point the cable started to slide off the deck into the water and EE jumped over the guard to stop it and cut the back of EE's leg on the guard.
April 30, 2019
MI · Metal/Non-Metal
barge/boat/dredge/towbarge/towboat/leach operator, riverman, deck hand
HANDLING OF MATERIALS
Gerken Materials Inc · Caught in, under or between a moving and a stationary object
Employee was moving a bearing housing for installation on the screen plant and pinched gloved finger between two one hundred pound housings. When they removed glove they realized that they had severely cut a finger right behind the finger nail. Several days later the finger tip was removed.
2011 · 1 incident
April 4, 2011
MI · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
HANDLING OF MATERIALS
Gerken Materials Inc · Caught in, under or between (Not Elsewhere Classified)
Connecting ladder chain together and cutting head flopped over and pinched EE's finger tip causing a laceration and fractured finger tip above his knuckle.
2000 · 2 incidents
May 26, 2000
MI · Metal/Non-Metal
front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator
MACHINERY
Hillsdale Sand & Gravel Inc · Caught in, under or between a moving and a stationary object
THUMB PINCHED BETWEEN ROCK AND CHAIN WHILE OPERATING DREDGE. THUMB NAIL TORN OFF.
May 26, 2000
MI · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
SLIP OR FALL OF PERSON
Hillsdale Sand & Gravel Inc · Fall from machine
EMPLOYEE WAS PUTTING NEW PIPE LINE ON THE BACK OF DREDGE, SLIPPED AND FELL ON PONTOON, DISLOCATING RIGHT SHOULDER.