Mining Incidents

Rib Mountain Quarry Metal/Non-Metal

Controlled by M10 Inc
Merrill, WI, Marathon County, WI  ·  Abandoned
MSHA Mine ID: 4700136

Rib Mountain Quarry has $2K in proposed MSHA penalties and $701 outstanding across 1 contested dockets, plus health sampling and the full incident record.

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Email me when a new MSHA incident is filed at Rib Mountain Quarry.

Fatalities
0
Total incidents
5
Years on record
1986–2004
Latest incident
Aug 2004
Compliance record
MSHA citations since 2000
17
citations
5
significant & substantial
$2,054
proposed penalties
$1,353
paid to date
66% of proposed penalties paid to date, a $701 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
39
inspections on record
392
inspection hours
n/a
citations per 100 inspection hours
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.
Rate withheld: 392 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Rib Mountain Quarry has $2K in proposed MSHA penalties and $701 outstanding across 1 contested dockets.

Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$2K
proposed penalties
$2K
current assessed
$1K
paid to date
$701
outstanding
16 assessments are final orders; 1 contested dockets.
As of the most recent assessment on 2021-11-03.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Quarterly safety rates
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2025 Q1 0 0 0
2024 Q4 0 0 0
2024 Q3 0 0 0
2024 Q2 0 0 0
2024 Q1 0 0 0
2023 Q4 0 0 0
2023 Q3 0 0 0
2023 Q2 1,704 0 0 0.0
Show 92 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q1 0 0 0
2022 Q4 972 0 0 0.0
2022 Q3 1,715 0 0 0.0
2022 Q2 1,838 0 0 0.0
2022 Q1 0 0 0
2021 Q4 1,490 1 0 671.1
2021 Q3 1,424 0 0 0.0
2021 Q2 1,260 0 0 0.0
2021 Q1 1,055 0 0 0.0
2020 Q4 1,448 1 0 690.6
2020 Q3 1,677 0 0 0.0
2020 Q2 2,345 0 0 0.0
2020 Q1 1,726 0 0 0.0
2019 Q4 621 0 0 0.0
2019 Q3 603 0 0 0.0
2019 Q2 923 0 0 0.0
2019 Q1 18 0 0 0.0
2018 Q4 444 0 0 0.0
2018 Q3 259 0 0 0.0
2018 Q2 1,169 0 0 0.0
2018 Q1 0 0 0
2017 Q4 360 0 0 0.0
2017 Q3 867 0 0 0.0
2017 Q2 894 1 1 1118.6
2017 Q1 80 0 0 0.0
2016 Q4 528 0 0 0.0
2016 Q3 1,180 0 0 0.0
2016 Q2 604 0 0 0.0
2016 Q1 30 0 0 0.0
2015 Q4 1,612 0 0 0.0
2015 Q3 1,057 0 0 0.0
2015 Q2 2,219 4 3 1802.6
2015 Q1 397 0 0 0.0
2014 Q4 1,151 0 0 0.0
2014 Q3 1,055 0 0 0.0
2014 Q2 833 1 0 1200.5
2014 Q1 354 0 0 0.0
2013 Q4 335 0 0 0.0
2013 Q3 312 0 0 0.0
2013 Q2 316 0 0 0.0
2013 Q1 0 0 0
2012 Q4 1,559 0 0 0.0
2012 Q3 1,542 0 0 0.0
2012 Q2 513 0 0 0.0
2012 Q1 212 0 0 0.0
2011 Q4 1,787 0 0 0.0
2011 Q3 252 0 0 0.0
2011 Q2 1,076 0 0 0.0
2011 Q1 64 0 0 0.0
2010 Q4 1,402 0 0 0.0
2010 Q3 2,107 0 0 0.0
2010 Q2 776 0 0 0.0
2010 Q1 19 0 0 0.0
2009 Q4 1,509 0 0 0.0
2009 Q3 878 0 0 0.0
2009 Q2 1,341 2 0 1491.4
2009 Q1 1 0 0 0.0
2008 Q4 779 0 0 0.0
2008 Q3 1,495 0 0 0.0
2008 Q2 1,377 0 0 0.0
2008 Q1 135 0 0 0.0
2007 Q4 480 0 0 0.0
2007 Q3 836 2 0 2392.3
2007 Q2 391 0 0 0.0
2007 Q1 406 0 0 0.0
2006 Q4 418 0 0 0.0
2006 Q3 256 0 0 0.0
2006 Q2 672 0 0 0.0
2006 Q1 98 0 0 0.0
2005 Q4 153 0 0 0.0
2005 Q3 893 3 1 3359.5
2005 Q2 73 0 0 0.0
2005 Q1 1 0 0 0.0
2004 Q4 1 0 0 0.0
2004 Q3 1,806 0 0 0.0
2004 Q2 772 0 0 0.0
2004 Q1 1 0 0 0.0
2003 Q4 374 1 0 2673.8
2003 Q3 2,434 0 0 0.0
2003 Q2 2,017 0 0 0.0
2003 Q1 584 0 0 0.0
2002 Q4 1,669 0 0 0.0
2002 Q3 1,758 0 0 0.0
2002 Q2 1,967 0 0 0.0
2002 Q1 1,456 0 0 0.0
2001 Q3 784 0 0 0.0
2001 Q2 438 0 0 0.0
2001 Q1 2,008 0 0 0.0
2000 Q4 1,731 1 0 577.7
2000 Q3 1,817 0 0 0.0
2000 Q2 621 0 0 0.0
2000 Q1 1 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

5 on file

2004 · 1 incident

August 25, 2004 WI · Metal/Non-Metal drill operator HANDTOOLS (NONPOWERED)
Michels Corporation · Struck by... (Not Elsewhere Classified)

Using improper hammer for the job, causing hammer to split and a foreign body went into left thigh.

1993 · 1 incident

December 14, 1993 WI · Metal/Non-Metal ledgeman/hand, quarry man SLIP OR FALL OF PERSON
Anderson Brothers & Johnson Company · Fall to lower level, (Not Elsewhere Classified)

HE WAS DRILLING HOLES WHEN HE STEPPED BACK FROM HIS JACK HAMMER HE BACKED INTO A HOLE ABOUT 3 FEET DEEP, HE FELL OVER HITTING HIS HEAD ON STONE & SCRAP IN THIS HOLE. HE HAD CUTS TO THE TOP OF HIS HEAD & FACE, & BROKE THE BONE BELOW HIS EYE.

1992 · 1 incident

October 9, 1992 WI · Metal/Non-Metal ledgeman/hand, quarry man OTHER
Anderson Brothers & Johnson Company · Over-exertion (Not Elsewhere Classified)

DONT KNOW WHEN INJURY WAS MADE & IS QUESTIONABLE IF WORK RELATED WAS TOLD ON 10-16-92 DID NOT KNOW IF WORK RELATED SO FORM WAS NOT FILED ON 10-22 TALKED TO WIFE SAID TO FILE WITH WORKERS COMP

1987 · 1 incident

January 9, 1987 WI · Metal/Non-Metal ledgeman/hand, quarry man SLIP OR FALL OF PERSON
Anderson Brothers & Johnson Company · Fall to lower level, (Not Elsewhere Classified)

THE COMPANY AS 3O RECORD OF THIS INJURY AND HAVE NO RECORD OF WHEN IT HAPPENED. PER DOCTORS RECORDS, I,NAME WAS CLIMBING OUT OF THE QUARRY AND FELL ON SOME ICE, MAINLY ON THE LEFT ELBOW.

1986 · 1 incident

August 21, 1986 WI · Metal/Non-Metal HANDLING OF MATERIALS
Anderson Brothers & Johnson Company · Struck by falling object

SMALL ROCK FELL3FROM QUARRY WALL AND HIT I NAME ON THE HEAD. AN EMPLOYEE ON TOP OF THE QUARRY MOVED SOMETHING AND A SHALL ROCK FELL HE YELLED DOWN TO WATCH OUT AND I NAME LOOKED UP AND THE ROC K HIT HIS HARD3HAT THEN HIT HIS HEAD.

For insurers, brokers, and safety consultants

The full compliance file on Rib Mountain Quarry

A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.