Mining Incidents

Cambridge City Pit: 51 MSHA citations Metal/Non-Metal

IMI Aggregates LLC · Surface
Controlled by Fred (Pete) Irving
Cambridge City, Wayne County, IN  ·  Active
MSHA Mine ID: 1201034

Cambridge City Pit has $5K in proposed MSHA penalties and $0 outstanding across 1 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
13
Years on record
1993–2017
Latest incident
Oct 2017
Compliance record
MSHA citations since 2000
51
citations
3
significant & substantial
$5,185
proposed penalties
$5,185
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
45
inspections on record
641
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: 641 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Cambridge City Pit has $5K in proposed MSHA penalties and $0 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.
$5K
proposed penalties
$5K
current assessed
$5K
paid to date
$0
outstanding
51 assessments are final orders; 1 contested dockets.
Of $143 in penalties contested before the Commission, $0 was upheld in final decisions.
As of the most recent assessment on 2025-03-13.
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.
5.9%
significant & substantial
0.0%
high negligence or reckless
5.9%
reasonably likely or greater
21.6%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 25.5% low, 74.5% moderate, 0.0% 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 · 2% of citations on record
  • Vacated or withdrawn 1 · 100%
100%
Penalty reduction in decided contests
$143 proposed, $0 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 2023-10-04.
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 2024-0008 Vacate 2023 $143 → $0
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: 2026-08-11
0%
of limit-tested samples over the exposure limit
10
samples
1
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg7
  • Quartz, respirable, >1% Qtz3
Show the individual readings (10)
Date Contaminant Concentration Limit Conc / limit Occupation
2026-08-11 Respirable dust, <.1mg 0 Front-end Loader Operator
2026-08-11 Respirable dust, <.1mg 0 Front-end Loader Operator
2023-12-18 Respirable dust, <.1mg 0 Utility Man
2021-06-22 Respirable dust, <.1mg 0 Front-end Loader Operator
2021-06-22 Respirable dust, <.1mg 0 Hydrating Plant Operator
2018-05-08 Quartz, respirable, >1% Qtz 0.16 Front-end Loader Operator
2018-05-08 Quartz, respirable, >1% Qtz 0.2 Truck Driver
2017-05-23 Quartz, respirable, >1% Qtz 0.3 0.85 0.35 Complete Load-Haul-Dump
2017-05-23 Respirable dust, <.1mg 0 Crusher Oper/Worker
2003-06-18 Respirable dust, <.1mg 0 Front-end Loader Operator
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.
Ownership history
  1. Irving Materials Inc 1950 to 2020
  2. IMI Aggregates LLC 2020 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 6
2025 7
2024 8
2023 8
2022 9
2021 9
2020 11
2019 8
2018 10
2017 8
2016 8
2015 8
2014 8
2013 7
2012 6
2011 8
2010 6
2009 6
2008 7
2007 8
2006 7
2005 7
2004 8
2003 6
2002 6
2001 7
2000 7
Source: MSHA quarterly employment and production, updated weekly.

Cambridge City Pit sits in Wayne County, Indiana, 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.
Wayne County, Indiana · Population 66,377
0.1%
Mining share of county employment
$56,652
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 4,099 0 0 0.0
2026 Q1 3,547 0 0 0.0
2025 Q4 3,738 0 0 0.0
2025 Q3 4,666 0 0 0.0
2025 Q2 3,432 0 0 0.0
2025 Q1 3,314 4 1 1207.0
2024 Q4 4,457 0 0 0.0
2024 Q3 3,970 2 0 503.8
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 3,822 0 0 0.0
2024 Q1 3,487 0 0 0.0
2023 Q4 3,495 1 0 286.1
2023 Q3 3,935 1 0 254.1
2023 Q2 3,937 0 0 0.0
2023 Q1 4,562 0 0 0.0
2022 Q4 3,647 0 0 0.0
2022 Q3 4,662 0 0 0.0
2022 Q2 4,191 0 0 0.0
2022 Q1 4,937 0 0 0.0
2021 Q4 4,901 1 0 204.0
2021 Q3 4,860 0 0 0.0
2021 Q2 5,268 0 0 0.0
2021 Q1 3,438 0 0 0.0
2020 Q4 3,713 0 0 0.0
2020 Q3 4,657 0 0 0.0
2020 Q2 4,426 3 0 677.8
2020 Q1 4,423 0 0 0.0
2019 Q4 3,750 1 0 266.7
2019 Q3 4,413 0 0 0.0
2019 Q2 3,625 1 0 275.9
2019 Q1 2,522 4 0 1586.0
2018 Q4 4,423 0 0 0.0
2018 Q3 4,844 0 0 0.0
2018 Q2 4,545 0 0 0.0
2018 Q1 3,355 0 0 0.0
2017 Q4 3,750 2 0 533.3
2017 Q3 4,723 0 0 0.0
2017 Q2 4,772 0 0 0.0
2017 Q1 2,430 0 0 0.0
2016 Q4 3,590 1 0 278.6
2016 Q3 4,607 0 0 0.0
2016 Q2 4,487 0 0 0.0
2016 Q1 2,321 0 0 0.0
2015 Q4 4,257 0 0 0.0
2015 Q3 4,463 0 0 0.0
2015 Q2 3,905 0 0 0.0
2015 Q1 2,568 0 0 0.0
2014 Q4 4,692 2 0 426.3
2014 Q3 4,577 0 0 0.0
2014 Q2 4,272 0 0 0.0
2014 Q1 2,001 0 0 0.0
2013 Q4 3,873 0 0 0.0
2013 Q3 3,950 0 0 0.0
2013 Q2 3,062 0 0 0.0
2013 Q1 1,276 0 0 0.0
2012 Q4 3,096 2 0 646.0
2012 Q3 3,364 0 0 0.0
2012 Q2 2,205 0 0 0.0
2012 Q1 1,423 0 0 0.0
2011 Q4 3,061 0 0 0.0
2011 Q3 3,854 3 0 778.4
2011 Q2 3,815 0 0 0.0
2011 Q1 2,044 0 0 0.0
2010 Q4 3,222 0 0 0.0
2010 Q3 2,773 0 0 0.0
2010 Q2 3,586 2 0 557.7
2010 Q1 2,411 0 0 0.0
2009 Q4 2,595 0 0 0.0
2009 Q3 3,275 0 0 0.0
2009 Q2 3,690 0 0 0.0
2009 Q1 2,274 1 0 439.8
2008 Q4 2,159 0 0 0.0
2008 Q3 3,375 0 0 0.0
2008 Q2 3,388 0 0 0.0
2008 Q1 4,689 0 0 0.0
2007 Q4 3,444 0 0 0.0
2007 Q3 4,801 0 0 0.0
2007 Q2 5,103 8 1 1567.7
2007 Q1 5,564 0 0 0.0
2006 Q4 4,225 0 0 0.0
2006 Q3 4,672 0 0 0.0
2006 Q2 5,371 0 0 0.0
2006 Q1 3,827 0 0 0.0
2005 Q4 3,326 0 0 0.0
2005 Q3 4,874 0 0 0.0
2005 Q2 4,547 0 0 0.0
2005 Q1 3,656 0 0 0.0
2004 Q4 2,774 5 1 1802.5
2004 Q3 3,223 0 0 0.0
2004 Q2 4,786 0 0 0.0
2004 Q1 3,393 0 0 0.0
2003 Q4 2,810 4 0 1423.5
2003 Q3 3,278 0 0 0.0
2003 Q2 4,348 0 0 0.0
2003 Q1 3,112 0 0 0.0
2002 Q4 2,756 0 0 0.0
2002 Q3 2,508 0 0 0.0
2002 Q2 2,576 0 0 0.0
2002 Q1 3,451 0 0 0.0
2001 Q4 3,233 0 0 0.0
2001 Q3 3,586 2 0 557.7
2001 Q2 2,915 0 0 0.0
2001 Q1 5,259 0 0 0.0
2000 Q4 3,691 0 0 0.0
2000 Q3 3,508 1 0 285.1
2000 Q2 3,616 0 0 0.0
2000 Q1 3,372 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

13 on file

2017 · 1 incident

October 11, 2017 IN · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman MACHINERY
Irving Materials Inc · Struck by flying object

EE started having eye irritation on 10/11 at 0900 hours. It is believed that a shard of metal from grinding the previous day caused the irritation to the eye. The flake of metal was removed and EE given antibiotics for this injury. EE was returned to work with no restrictions. During the grinding process EE was in full and appropriate PPE.

2014 · 1 incident

December 3, 2014 IN · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Irving Materials Inc · Over-exertion in lifting objects

WHILE SHOVELING SAND TO MAKE SMALL TRENCH HE TWISTED AROUND TO DUMP SHOVEL WHEN BACK MADE POPPING SOUND LIKE BREAKING A STICK. LOWER LEFT SIDE OF BACK WAS VERY PAINFUL BUT COMPLETED WORK DAY & WENT HOME.DECIDED LATER THAT NITE TO GO TO E.R. WHERE DR. EXAMINED & PRESCRIBED MEDS WITH LIGHT DUTY. WAS TOLD IF PAIN PERSISTS TO SEEK FURTHER MEDICAL ATTENTION.

2013 · 1 incident

June 21, 2013 IN · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Irving Materials Inc · Over-exertion in pulling or pushing objects

WHILE PICKING MUD & ROCKS OFF OF CONVEYOR BELT, HE REACHED OUT TO PUSH A ROCK OFF THAT WAS HEAVIER THAN EXPECTED. THIS SPRAINED HIS RIGHT SHOULDER & HE NOTIFIED FELLOW EMPLOYEES & MANAGEMENT IMMEDIATELY. HE CHOSE NOT TO SEEK ANY MEDICAL ATTENTION UNTIL 07-12-2013 AFTER CONTINUED SORENESS PERSISTED.

2012 · 1 incident

March 23, 2012 IN · Metal/Non-Metal ledgeman/hand, quarry man SLIP OR FALL OF PERSON
Irving Materials Inc · Fall from machine

EE was doing maint. on crane his foot slipped off of step. The EE fell backwards striking tracks with leftside before landing on ground in a sitting position. Dr. said to take it easy over weekend and gave him medication for first few days. RTW Monday with no loss time or restrictions.

2008 · 1 incident

November 11, 2008 IN · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Irving Materials Inc · Struck against stationary object

While attempting to set a cable into the eye of a dragline bucket, he pulled back hard on the cable. This caused him to raise up & strike his hard hat on the pulley jamming his neck & back. He did not seek treatment until that evening. He was prescribed medication. After taking medication he had a severe allergic reaction causing a hospital stay & time off with restrictions.

2006 · 1 incident

March 27, 2006 IN · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE
Irving Materials Inc · Struck against a moving object

While creating a new haul road and driving the 980E Cat Front End Payloader over ruff terrain, he jostled/jarred his back repeatedly causing damage to his upper and lower back.

2004 · 1 incident

January 12, 2004 IN · Metal/Non-Metal backhoe operator, trackhoe operator, crane operator SLIP OR FALL OF PERSON
Irving Materials Inc · Fall from scaffolds, walkways, platforms

WAS CUTTING A CATWALK TO BE REMOVED UNDER SAND CLASSIFIER AND HE FELL ON GROUND BELOW AND AWAY FROM WHERE HE WAS STANDING.

2003 · 1 incident

June 9, 2003 IN · Metal/Non-Metal miner, nec HANDLING OF MATERIALS
Irving Materials Inc · Over-exertion in lifting objects

WAS TRYING TO PUT WOODEN BLOCKS UNDER CRANE OUTRIGGERS TO LEVEL UP MACHINE WHEN BACK INJURY OCCURED.

2000 · 1 incident

February 9, 2000 IN · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Irving Materials Inc · Fall to the walkway or working surface

ICE & SNOW ON GROUND WAS VERY SLICK EE SLIPPED AND FELL AND BROKE HIS FINGER.

1999 · 1 incident

July 23, 1999 IN · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Irving Materials Inc · Fall from machine

WHILE EXITING THE HAUL UNIT, HE WAS STEPPING DOWN WHEN HIS FOOT SLIPPED OFF THE STEP. ON HIS WAY DOWN HE STRUCK A PIECE OF METAL ON THE HAUL UNIT WITH HIS BACK.

1998 · 2 incidents

July 27, 1998 IN · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Irving Materials Inc · Struck by... (Not Elsewhere Classified)

CHIP CAME OFF CHISEL

April 17, 1998 IN · Metal/Non-Metal loader head operator, roscoe operator POWERED HAULAGE
Irving Materials Inc · Struck against a moving object

A TRUCK RAN BEHIND LOADER & LOADER STOPPED REAL QUICK

1993 · 1 incident

May 11, 1993 IN · Metal/Non-Metal crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger HANDTOOLS (NONPOWERED)
Irving Materials Inc · Struck by... (Not Elsewhere Classified)

CUT FINGER WITH UTILITY BOX CUTTER. HE WAS CUTTING BOTTOM OUT OF A PLASTIC OIL CAN. THE INJURY REQUIRED STITCHES.