Mining Incidents

Amrize Colgate Pit Yard 1: 170 MSHA citations Metal/Non-Metal

Controlled by Amrize Ltd
Colgate, Waukesha County, WI  ·  Active
MSHA Mine ID: 4700907

Amrize Colgate Pit Yard 1 has $53K in proposed MSHA penalties and $212 outstanding across 1 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
6
Years on record
1987–2014
Latest incident
Aug 2014
Compliance record
MSHA citations since 2000
170
citations
38
significant & substantial
$52,525
proposed penalties
$52,313
paid to date
100% of proposed penalties paid to date, a $212 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
71
inspections on record
1,335
inspection hours
12.7
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.
170 citations across 1,335 inspection hours.
Source: MSHA inspections data, updated weekly.

Amrize Colgate Pit Yard 1 has $53K in proposed MSHA penalties and $212 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.
$53K
proposed penalties
$53K
current assessed
$52K
paid to date
$212
outstanding
168 assessments are final orders; 1 contested dockets.
Of $100 in penalties contested before the Commission, $100 was upheld in final decisions.
As of the most recent assessment on 2026-01-27.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
22.4%
significant & substantial
8.8%
high negligence or reckless
22.4%
reasonably likely or greater
29.4%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 22.9% low, 68.2% moderate, 8.8% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
When citations were contested
Contesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
1 citations taken to the federal commission · 1% of citations on record
  • Settled 1 · 100%
0%
Penalty reduction in decided contests
$100 proposed, $100 after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2012-07-23.
Contested penalties
A reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Docket Decision Judge Year Proposed / upheld
LAKE 2012-767M Settlement Zielinski 2013 $100 → $100
Source: FMSHRC civil penalty dockets and decisions (public record), updated weekly.
Health sampling
A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.

Metal and nonmetal contaminants (personal samples)
Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.

Last sampled: 2023-09-20
0%
of limit-tested samples over the exposure limit
18
samples
4
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg13
  • Nuisance dust, respirable, <1% Qtz3
  • Quartz, respirable, >1% Qtz1
  • Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (18)
Date Contaminant Concentration Limit Conc / limit Occupation
2023-09-20 Respirable dust, <.1mg 0 Utility Man
2023-09-20 Respirable dust, <.1mg 0 Lab Technician
2019-04-24 Respirable dust, <.1mg 0 Laborer, Bullgang
2019-04-24 Respirable dust, <.1mg 0 Supervisor, Co. Official
2017-07-19 Respirable dust, <.1mg 0 Complete Load-Haul-Dump
2017-07-19 Respirable dust, <.1mg 0 Utility Man
2017-07-19 Respirable dust, <.1mg 0 Cleanup Man
2012-05-02 Respirable dust, <.1mg 0 Front-end Loader Operator
2012-05-02 Unlisted Particulate, respirable, <1% Qtz 0.18 Washer Operator
2012-05-02 Respirable dust, <.1mg 0 Bulldozer Operator
2010-01-05 Nuisance dust, respirable, <1% Qtz 1.03 10 0.10 Mechanic
2010-01-05 Nuisance dust, respirable, <1% Qtz 0.97 10 0.10 Mechanic
2010-01-05 Nuisance dust, respirable, <1% Qtz 0.23 10 0.02 Front-end Loader Operator
2004-10-20 Respirable dust, <.1mg 0 Crusher Oper/Worker
2004-10-20 Quartz, respirable, >1% Qtz 0.19 1.29 0.15 Utility Man
2004-10-20 Respirable dust, <.1mg 0 Utility Man
2004-10-20 Respirable dust, <.1mg 0 Crusher Oper/Worker
2004-10-20 Respirable dust, <.1mg 0 Crusher Oper/Worker
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.

Amrize Colgate Pit Yard 1 recorded 0.00 reportable injury cases per 100 full-time workers in 2025.

Injury rate, 2025
This rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
No reportable injury cases in any year shown. Employee-hours were reported in each of those years, so these are true zeros rather than missing data. Citations, listed in the compliance record above, are inspector-found violations and are counted separately from worker injuries.
Below average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In Wisconsin, metal and nonmetal mining averaged 1.80 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Year total case rate days-away fatal
2025 * 0.00 0.00 0.000
2024 * 0.00 0.00 0.000
2022 * 0.00 0.00 0.000
2021 * 0.00 0.00 0.000
2020 * 0.00 0.00 0.000
2019 * 0.00 0.00 0.000
2018 * 0.00 0.00 0.000
2017 * 0.00 0.00 0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Ownership history
  1. Tews Company 1978 to 1998
  2. Lafarge-Wisconsin Division 1998 to 2002
  3. Lafarge North America Incorporated 2002 to 2019
  4. Amrize Mid-America Inc. 2019 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 14
2025 13
2024 12
2023 12
2022 11
2021 11
2020 10
2019 11
2018 11
2017 10
2016 10
2015 9
2014 8
2013 8
2012 8
2011 8
2010 8
2009 7
2008 7
2007 9
2006 9
2005 9
2004 9
2003 10
2002 10
2001 8
2000 7
Source: MSHA quarterly employment and production, updated weekly.

Amrize Colgate Pit Yard 1 sits in Waukesha County, Wisconsin, where the Census mining category is 0.1% of county employment.

Local economic context
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Waukesha County, Wisconsin · Population 409,040
0.1%
Mining share of county employment
$104,100
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
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
2026 Q2 6,980 0 0 0.0
2026 Q1 4,550 1 0 219.8
2025 Q4 6,132 0 0 0.0
2025 Q3 8,034 0 0 0.0
2025 Q2 8,910 2 0 224.5
2025 Q1 5,360 0 0 0.0
2024 Q4 7,579 3 0 395.8
2024 Q3 8,090 1 0 123.6
Show 97 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 7,499 0 0 0.0
2024 Q1 4,340 3 0 691.2
2023 Q4 5,944 0 0 0.0
2023 Q3 7,503 0 0 0.0
2023 Q1 4,369 0 0 0.0
2022 Q4 5,166 0 0 0.0
2022 Q3 6,701 3 1 447.7
2022 Q2 7,284 0 0 0.0
2022 Q1 5,024 2 0 398.1
2021 Q4 6,359 0 0 0.0
2021 Q3 6,570 3 0 456.6
2021 Q2 6,761 0 0 0.0
2021 Q1 4,642 2 0 430.8
2020 Q4 5,627 0 0 0.0
2020 Q3 7,846 1 0 127.5
2020 Q2 5,291 0 0 0.0
2020 Q1 4,139 0 0 0.0
2019 Q4 4,064 0 0 0.0
2019 Q3 6,664 0 0 0.0
2019 Q2 6,907 2 0 289.6
2019 Q1 5,476 1 0 182.6
2018 Q4 6,482 0 0 0.0
2018 Q3 6,692 0 0 0.0
2018 Q2 7,248 7 1 965.8
2018 Q1 5,869 8 3 1363.1
2017 Q4 5,547 0 0 0.0
2017 Q3 5,865 8 1 1364.0
2017 Q2 7,086 0 0 0.0
2017 Q1 5,133 2 0 389.6
2016 Q4 5,085 0 0 0.0
2016 Q3 7,272 6 0 825.1
2016 Q2 5,471 0 0 0.0
2016 Q1 4,533 6 1 1323.6
2015 Q4 4,362 0 0 0.0
2015 Q3 5,906 2 1 338.6
2015 Q2 5,110 2 1 391.4
2015 Q1 3,069 5 0 1629.2
2014 Q4 2,778 0 0 0.0
2014 Q3 5,511 0 0 0.0
2014 Q2 4,720 1 1 211.9
2014 Q1 3,273 2 0 611.1
2013 Q4 3,798 0 0 0.0
2013 Q3 5,017 0 0 0.0
2013 Q2 4,324 3 1 693.8
2013 Q1 4,006 2 0 499.3
2012 Q4 4,252 0 0 0.0
2012 Q3 5,169 0 0 0.0
2012 Q2 4,930 2 0 405.7
2012 Q1 4,057 16 7 3943.8
2011 Q4 4,057 0 0 0.0
2011 Q3 4,640 2 0 431.0
2011 Q2 4,796 0 0 0.0
2011 Q1 3,955 4 2 1011.4
2010 Q4 4,025 0 0 0.0
2010 Q3 4,534 9 2 1985.0
2010 Q2 4,485 0 0 0.0
2010 Q1 3,380 2 1 591.7
2009 Q4 4,098 5 2 1220.1
2009 Q3 4,683 9 8 1921.8
2009 Q2 4,527 0 0 0.0
2009 Q1 2,131 6 0 2815.6
2008 Q4 3,880 0 0 0.0
2008 Q3 5,019 0 0 0.0
2008 Q2 3,071 0 0 0.0
2008 Q1 2,876 0 0 0.0
2007 Q4 4,500 0 0 0.0
2007 Q3 5,744 0 0 0.0
2007 Q2 5,378 0 0 0.0
2007 Q1 4,905 0 0 0.0
2006 Q4 5,303 0 0 0.0
2006 Q3 6,117 0 0 0.0
2006 Q2 6,585 1 0 151.9
2006 Q1 5,011 0 0 0.0
2005 Q4 5,052 0 0 0.0
2005 Q3 6,604 2 0 302.8
2005 Q2 5,387 0 0 0.0
2005 Q1 4,738 0 0 0.0
2004 Q4 4,877 3 0 615.1
2004 Q3 5,706 0 0 0.0
2004 Q2 5,638 0 0 0.0
2004 Q1 4,842 0 0 0.0
2003 Q4 5,516 6 0 1087.7
2003 Q3 6,333 0 0 0.0
2003 Q2 6,548 0 0 0.0
2003 Q1 4,641 0 0 0.0
2002 Q4 4,484 4 1 892.1
2002 Q3 5,707 0 0 0.0
2002 Q2 6,021 0 0 0.0
2002 Q1 5,085 0 0 0.0
2001 Q4 4,479 0 0 0.0
2001 Q3 4,685 0 0 0.0
2001 Q2 2,526 0 0 0.0
2001 Q1 3,685 0 0 0.0
2000 Q4 3,242 2 1 616.9
2000 Q3 3,980 0 0 0.0
2000 Q2 5,429 1 1 184.2
2000 Q1 3,108 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

6 on file

2014 · 1 incident

August 21, 2014 WI · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Lafarge North America Incorporated · Fall from ladders

Employee was carrying a hand tool up a ladder. At 6' the employee fell and sustained minor cuts, and had some significant bruising.

2002 · 1 incident

April 16, 2002 WI · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer OTHER
Lafarge North America Incorporated · Struck by... (Not Elsewhere Classified)

EE WAS LOOKING UP AT A RETURN ROLLER WHEN A GUST OF WIND BLEW A SMALL STONE INTO HIS EYE.

2001 · 3 incidents

August 7, 2001 WI · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Lafarge-Wisconsin Division · Struck by... (Not Elsewhere Classified)

WHILE PLACING SHAFT IN HEAD PULLEY, SHAFT CAME LOOSE, STRIKING EMPLOYEE'S LEFT HAND.

June 11, 2001 WI · Metal/Non-Metal assayer, geologist, metallurgist, engineer, engineer management HANDLING OF MATERIALS
Lafarge-Wisconsin Division · Over-exertion (Not Elsewhere Classified)

WHILE SHOVELING, TWISTING, BENDING, TURNING, KNEE SWELLED. PAST HISTORY OF KNEE (DISLOCATION APPROX. 12 YEARS AGO).

January 19, 2001 WI · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Lafarge-Wisconsin Division · Over-exertion in lifting objects

WHILE APPEMPTING TO MOVE A PIECE OF STEEL(PERFORMING MAINTENANCE) EE TWISTED WRONG RESULTING IN A STRAINED BACK. THIS INJURY DID NOT RESULT IN LOST TIME BUT MEDICAL ATTENTION WAS ADMINISTERD(C HIROPRATIC PARTNERS S.C. -WAUKESHA,WI). WENT TO DR. ON 1-22-01 AND STARTED MODIFIED DUTY SAME DAY.

1987 · 1 incident

November 30, 1987 WI · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Tews Company · Struck by falling object

WORKER ROLLED STONE DOWN A SMALL GRADE AND STONE ROLLED OFF ANOTHER AND HIT WORKER LEFT LEG.