Employee was walking electrical cord backwards and tripped over bobcat bucket that was parked near the working area. Employee fell backwards and landed on their backside. Employee has a very sore buttocks and a headache set in right away. Employee is continuing to work at this time.
#79 Pioneer 50 VE Metal/Non-Metal
Wm. Mueller & Sons, Inc.
· Surface
Controlled by
Timothy W Mueller; Mori D Willemsen; Brian Droege
Hamburg,
Carver County,
MN
·
Intermittent
MSHA Mine ID: 2103312
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- Fatalities
- 0
- Total incidents
- 4
- Years on record
- 2013–2022
- Latest incident
- Nov 2022
Compliance record
MSHA citations since 2006
19
citations
7
significant & substantial
$2,471
proposed penalties
$2,471
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 | 69 | 0 | 0 | 0.0 |
| 2025 Q3 | 305 | 0 | 0 | 0.0 |
| 2025 Q2 | 302 | 0 | 0 | 0.0 |
| 2025 Q1 | 0 | 0 | 0 | |
| 2024 Q4 | 479 | 0 | 0 | 0.0 |
| 2024 Q3 | 113 | 0 | 0 | 0.0 |
| 2024 Q2 | 765 | 0 | 0 | 0.0 |
| 2024 Q1 | 97 | 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
4 on file2022 · 1 incident
Wm. Mueller & Sons, Inc. · Fall to the walkway or working surface
2016 · 1 incident
Wm. Mueller & Sons, Inc. · Struck by... (Not Elsewhere Classified)
Clearing a jam in the crusher and the pry bar slipped and broke employee's left pinky finger
2015 · 1 incident
September 30, 2015
MN · Metal/Non-Metal
crusher attendant/operator, pan feeder operator/worker
SLIP OR FALL OF PERSON
Wm. Mueller & Sons, Inc. · Over-exertion (Not Elsewhere Classified)
Walking out of crusher shack and stumbled and broke right ankle
2013 · 1 incident
August 26, 2013
MN · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
SLIP OR FALL OF PERSON
Wm. Mueller & Sons, Inc. · Over-exertion (Not Elsewhere Classified)
Cleaning out rolls on crusher, standing on belting slipped metal edge hit right ankle rolled ankle cracked R. foot.