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.
100 citations across 1,297 inspection hours.
Source: MSHA inspections data, updated weekly.
Imminent-danger orders
ⓘA Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.
1
Section 107(a) orders
Most recent order: 2012-09-11.
On record since 2012.
Source: MSHA imminent-danger order records, updated weekly.
Maumee Quarry has $18K in proposed MSHA penalties and $2K outstanding across 3 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.
$18K
proposed penalties
$18K
current assessed
$15K
paid to date
$2K
outstanding
89 assessments are final orders; 3 contested dockets.
Of $363 in penalties contested before the Commission, $263 was upheld in final decisions.
As of the most recent assessment on 2026-06-23.
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.
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.
6citations taken to the federal commission · 6% of citations on record
Stood as issued
1 · 17%
Vacated or withdrawn
1 · 17%
Still open
4 · 67%
100%
S&S designation survived the contest
ⓘCounts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 1 decided S&S contests · industry: 79%
28%
Penalty reduction in decided contests
$363 proposed, $263 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 A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record.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 2026-04-08.
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.
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: 2026-02-04
0%
of limit-tested samples over the exposure limit
26
samples
10
limit-tested
Most sampled contaminants
Respirable dust, <.1mg13
Nuisance dust, respirable, <1% Qtz7
Quartz, respirable, >1% Qtz4
Nuisance dust, total, <1% Qtz2
Show the individual readings (26)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-02-04
Quartz, respirable, >1% Qtz
0.17
Truck Driver
2026-02-04
Quartz, respirable, >1% Qtz
0.45
Ball Mill Operator
2026-02-04
Quartz, respirable, >1% Qtz
0.29
Laborer, Bullgang
2024-01-10
Nuisance dust, respirable, <1% Qtz
0.14
10
0.01
Crusher Oper/Worker
2024-01-10
Respirable dust, <.1mg
0
Utility Man
2023-01-04
Respirable dust, <.1mg
0
Front-end Loader Operator
2023-01-04
Nuisance dust, total, <1% Qtz
0.14
10
0.01
Dry Screen Plant Operator
2023-01-04
Nuisance dust, total, <1% Qtz
0.16
10
0.02
Crusher Oper/Worker
2023-01-04
Respirable dust, <.1mg
0
Truck Driver
2014-07-02
Nuisance dust, respirable, <1% Qtz
0.68
10
0.07
Crusher Oper/Worker
2014-07-02
Respirable dust, <.1mg
0
Supervisor, Co. Official
2014-07-02
Respirable dust, <.1mg
0
Truck Driver
2014-07-02
Respirable dust, <.1mg
0
Front-end Loader Operator
2014-07-02
Respirable dust, <.1mg
0
Front-end Loader Operator
2009-09-23
Respirable dust, <.1mg
0
Front-end Loader Operator
2009-09-23
Respirable dust, <.1mg
0
Crusher Oper/Worker
2009-09-23
Respirable dust, <.1mg
0
Crusher Oper/Worker
2009-09-23
Respirable dust, <.1mg
0
Truck Driver
2003-10-08
Nuisance dust, respirable, <1% Qtz
0.13
10
0.01
Crusher Oper/Worker
2003-10-08
Respirable dust, <.1mg
0
Front-end Loader Operator
2003-10-08
Nuisance dust, respirable, <1% Qtz
0.66
10
0.07
Crusher Oper/Worker
2003-10-08
Nuisance dust, respirable, <1% Qtz
0.31
10
0.03
Front-end Loader Operator
2002-07-30
Respirable dust, <.1mg
0
Front-end Loader Operator
2002-07-30
Quartz, respirable, >1% Qtz
0.77
3.06
0.25
Crusher Oper/Worker
2002-07-30
Nuisance dust, respirable, <1% Qtz
0.55
10
0.06
Crusher Oper/Worker
2002-07-30
Nuisance dust, respirable, <1% Qtz
0.16
10
0.02
Truck Driver
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.
Maumee Quarry recorded 13.62 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.
13.62
total case rate
6.81
days-away rate
0.000
fatality rate
Above 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 Ohio, metal and nonmetal mining averaged 1.56 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 *
13.62
6.81
0.000
2024 *
5.63
0.00
0.000
2023 *
0.00
0.00
0.000
2022 *
0.00
0.00
0.000
2021 *
6.04
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
16
2025
15
2024
16
2023
13
2022
14
2021
14
2020
12
2019
13
2018
13
2017
13
2016
14
2015
12
2014
13
2013
13
2012
13
2011
12
2010
13
2009
12
2008
15
2007
18
2006
17
2005
17
2004
17
2003
17
2002
17
2001
14
2000
14
Source: MSHA quarterly employment and production, updated weekly.
Maumee Quarry sits in Lucas County, Ohio, 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.
Lucas County, Ohio · Population 428,748
0.1%
Mining share of county employment
$60,095
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
Employee was returning to the pit from primary. As EE neared the bottom of the long ramp, the auto retarder engaged which caused EE's shoulder belt to lock up and slip up EE's neck. Strain to unspecified parts of the neck.
September 24, 2025OH · Metal/Non-Metalball/rod/pebble/hand/limestone/dry mill operator, roller operatorMACHINERY
Stoneco Inc · Fall to the walkway or working surface
Employee Statement - Put tubes out. Had one remaining and took it to stemming pile where extra tubes are kept. Walking back to drill, I slipped on some stemming #6 stones that were on top of smooth bedrock. My right foot went up and my left foot ended up underneath me. I felt my left ankle pop.
2021 · 1 incident
August 23, 2021OH · Metal/Non-Metalcrusher attendant/operator, pan feeder operator/workerHANDLING OF MATERIALS
Stoneco Inc · Caught in, under or between a moving and a stationary object
Employee pinched a hand in between a hinged step and the skid steer bucket that was assisting them.
2007 · 1 incident
November 9, 2007OH · Metal/Non-Metalelectrician, linemanELECTRICAL
Employee was working on replacing a twenty amp circuit breaker. Employee de-energized panel by turning 100 amp main circuit breaker off. Leads on primary side of main circuit breaker shorted and caused flash.
2006 · 1 incident
August 1, 2006OH · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorPOWERED HAULAGE
EE was cleaning up after a shot and he didn't have his buckel all the way down on the ground, He ran over a rock. That made his upper body twist and his head hit the center post in the cab. He cut his head on the left side and had to get 2 staples in his head. I took him to hospital. He returned to work with out restrictions.
2005 · 2 incidents
August 31, 2005OH · Metal/Non-Metalhaul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driverSLIP OR FALL OF PERSON
While climbing up into the terex haul truck (45 ton #26.8939) His right foot slipped off the step, causing him to fall He fell about 4 ft. He said he had pain in right foot and right knee. About and hour after accident he went to St. Lukes Hospital. They took x rays and was discharge )sprain right knee and ankle). He had wet shoes when he went to get into the truck.
February 23, 2005OH · Metal/Non-Metalelectrician, linemanOTHER
EE ROLLED A ROLL OF WIRE ONTO ITS SIDE IN ORDER TO ROLL IT TO JOB TRAILER. EE FELT PAIN IN CHEST AND EXPERIENCED SHORTNESS OF BREATH. EMERGENCY PERSONNEL WERE CALLED AND TRANSPORTED TO HOSPITAL. IT WAS SUSPECTED THAT THE EE WAS SUFFERING A HEART ATTACK
2004 · 1 incident
December 15, 2004OH · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techSTEPPING OR KNEELING ON OBJECT
While walking under conveyor 110 towards the service truck employee stepped over a small pile of rocks, and when his weight was on his left foot the small rock he was standing on rolled and he lost his balance and twisted his left ankle.
EE WAS FUELING UP LOADER AT THE END OF HIS SHIFT, HE HAD ONE HAND ON THE LOADER AND ONE HAND ON THE FUEL HOSE. EE WAS GETTING OFF THE LOADER WHEN HE SLIPPED OFF THE LADDER OF LOADER & FELL BAC KWARDS HITTING HIS BACK ON THE GUARD RAIL.
1998 · 2 incidents
November 20, 1998OH · Metal/Non-Metaldrill operatorMACHINERY
Stoneco Inc · Contact with hot objects or substances
EE WAS WELDING ON A PIPE AND HE CHIPPED THE WELD AND GOT A PIECE OF SLAG IN HIS EYE. WASH EYE OUT WITH BUFFERED USUHING SOLUTION. EE THAN WENT TO HOPSITAL TO GET CHECK OUT BETTER. AFTER TAIL T O EE ON 1-6-99 WITH EE WE FOND OUT THAT HE HAD TO SEE EYE DR. THREE TIME TO CHECK FOR INFLICTION. THIS IS WHY THIS REPORT IN LATE.
April 21, 1998OH · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDTOOLS (NONPOWERED)
Stoneco Inc · Caught in, under or between (Not Elsewhere Classified)
WE WAS PULLING A PULLEY WITH A COMEALONG WHEN EEPICK UP THE OTHER SIDE OF THE PULLEY WITH HIS HAND, AND THE PULLEY WENT IN REAL FAST AND CRUSH HIS FINGER. 3 SUTURES WERE NEEDED
1997 · 2 incidents
October 27, 1997OH · Metal/Non-Metalloader head operator, roscoe operatorSTRIKING OR BUMPING
PUT WATER LINE IN LOADER BUCKET TO TURN AROUND TO THE OTHER SIDE OR PUMP HOLE. WHEN THE LINE GOT ABOUT 3/4 OF THE WAY AROUND IT SLIPPED UNDER THE LOADER BUCEKT AND CONE AROUND THE SIDE OF THEL OADER, AND HIT MY WRIST.
April 19, 1996OH · Metal/Non-Metaldrill operatorMACHINERY
NORMAL CONDITIONS HAUL ROAD WAS CLEAR, WEATHER CONDITIONS WERE SUNNY & WARM. THE TRUCK STRUCK THE BERM ON THE LEFT SIDED HAUL ROAD & OVER TURNED RESULTING IN LIGHT DAMAGE TO TRUCK AND A CUT TO THE BACK OF THE HEAD AND A CONCUSSION TO THE DRIVER.
February 26, 1990OH · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON
Stoneco Inc · Fall to the walkway or working surface
ICE AND SNOW WAS ON THE GROUND, LOWERMILL OPERATOR WAS WALKING UP TO OFFICE AND FELL DOWN BRUISED RIBS.
A TRUCK DRIVER NOT FULLY UNDERSTANDING HAZARDS OF DUMPING OFF THE TOP OF THE PILE BACKED THE R REAR TIRES OFF THE EDGE THUS CAUSING THE TRUCK TO FLIP OFF THE PILE MINOR BRUISES AND BUMP TO THE HEAD OF THE OPERATOR ETENSIVE DAMAGE TOT HE HAUL TRUCK
1986 · 2 incidents
May 14, 1986OH · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorMACHINERY
TRYING TO DISLO8GE STOVE , STUCK IN CRUSHER ABRASION TO FOREHEAD.
April 8, 1986OH · Metal/Non-Metalhaul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driverSLIP OR FALL OF PERSON
Stoneco Inc · Caught in, under or between (Not Elsewhere Classified)
WHILE RUNNING A9OUND HIS TRUCK TO CLOSE A BIN GATE HE REACHED OUT GRABBING ON THE BUMPER OF HIS TRUCK. HIS RING WAS CAUGHT ON THE ROUGH EDGE THROWING HIM TO THE GROUND RESULTS 7 STITCHES ON R ING FINGER. 3