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: 846 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Celina Quarry has $5K in proposed MSHA penalties and $0 outstanding across 0 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
40 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-04-23.
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.
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: 2025-04-23
0%
of limit-tested samples over the exposure limit
24
samples
12
limit-tested
Most sampled contaminants
Respirable dust, <.1mg12
Nuisance dust, respirable, <1% Qtz11
Nuisance dust, total, <1% Qtz1
Show the individual readings (24)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2025-04-23
Respirable dust, <.1mg
0
Bobcat Operator
2025-04-23
Nuisance dust, total, <1% Qtz
0.33
10
0.03
Crusher Oper/Worker
2025-04-23
Respirable dust, <.1mg
0
Front-end Loader Operator
2025-04-23
Respirable dust, <.1mg
0
Truck Driver
2023-09-26
Respirable dust, <.1mg
0
Crusher Oper/Worker
2023-09-26
Respirable dust, <.1mg
0
Crusher Oper/Worker
2023-09-26
Respirable dust, <.1mg
0
Front-end Loader Operator
2020-10-28
Nuisance dust, respirable, <1% Qtz
1.99
10
0.20
Washer Operator
2020-10-28
Respirable dust, <.1mg
0
Front-end Loader Operator
2020-10-28
Nuisance dust, respirable, <1% Qtz
2.54
10
0.25
Crusher Oper/Worker
2020-10-28
Respirable dust, <.1mg
0
Truck Driver
2014-05-13
Nuisance dust, respirable, <1% Qtz
0.52
10
0.05
Washer Operator
2014-05-13
Nuisance dust, respirable, <1% Qtz
0.13
10
0.01
Crusher Oper/Worker
2014-05-13
Respirable dust, <.1mg
0
Utility Man
2014-05-13
Respirable dust, <.1mg
0
Truck Driver
2010-05-04
Respirable dust, <.1mg
0
Front-end Loader Operator
2010-05-04
Nuisance dust, respirable, <1% Qtz
0.13
10
0.01
Supervisor, Co. Official
2010-05-04
Nuisance dust, respirable, <1% Qtz
0.17
10
0.02
Washer Operator
2010-05-04
Nuisance dust, respirable, <1% Qtz
0.33
10
0.03
Crusher Oper/Worker
2003-06-25
Nuisance dust, respirable, <1% Qtz
0.89
10
0.09
Washer Operator
2003-06-25
Nuisance dust, respirable, <1% Qtz
0.95
10
0.10
Crusher Oper/Worker
2003-06-25
Nuisance dust, respirable, <1% Qtz
0.12
10
0.01
Utility Man
2003-06-25
Respirable dust, <.1mg
0
Front-end Loader Operator
2003-06-25
Nuisance dust, respirable, <1% Qtz
0.17
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.
Celina Quarry recorded 0.00 reportable injury cases per 100 full-time workers in 2021.
Injury rate, 2021
ⓘ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 1.87 and the all-US-mining average was 2.19 cases per 100 workers.
In Ohio, metal and nonmetal mining averaged 1.35 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
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
2016 *
0.00
0.00
0.000
2015 *
0.00
0.00
0.000
2014 *
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
7
2025
11
2024
8
2023
10
2022
10
2021
10
2020
11
2019
11
2018
11
2017
11
2016
11
2015
12
2014
11
2013
12
2012
11
2011
11
2010
9
2009
10
2008
12
2007
10
2006
11
2005
13
2004
13
2003
11
2002
11
2001
11
2000
13
Source: MSHA quarterly employment and production, updated weekly.
Celina Quarry sits in Mercer 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.
Mercer County, Ohio · Population 42,438
0.1%
Mining share of county employment
$78,036
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
The injured worker was preparing new high voltage cables to install connecting lugs. While using a knife to trim the insulating jacket from the cable the injured worker cut EE's left hand when the knife slipped from the cable. Five sutures were used to repair the laceration.
2022 · 1 incident
August 18, 2022OH · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSTEPPING OR KNEELING ON OBJECT
Cleaning and entered an area where sand / fines fall onto the floor. Employee stepped onto a plate that covers an opening. Plate flipped came back down and EE's foot slid and the plate turned in the opening causing EE's foot to be pinched between the plate and opening.
2005 · 2 incidents
November 15, 2005OH · Metal/Non-Metalassayer, geologist, metallurgist, engineer, engineer managementHANDLING OF MATERIALS
Stoneco Inc · Caught in, under or between a moving and a stationary object
Cleaning out catch basin, pulled lid & set down on finger.
January 19, 2005OH · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorSLIP OR FALL OF PERSON
January 6, 1995OH · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS
Stoneco Inc · Caught in, under or between a moving and a stationary object
MOVING PIECE STEEL ONE END WAS LOWER DOWN BY ANOTHER PERSON. THE MAN LOWER HIS END AND GOT A FINGER CAUGHT ON PIECE OF GROUND. SMASHING THE TIP OF FINGER AND FRACTURING THE TIP OF FINGER.
1992 · 2 incidents
March 16, 1992OH · Metal/Non-Metalhaul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driverSLIP OR FALL OF PERSON
INJURED WAS USING SCREWDRIVER TO PRY DOOR HANDLE INTO PLACE; SCREWDRIVER SLIPPED HITTING LOWER LIP AND SHIN. SCREWDRIVER CUT CHIN AND LOWER LIP REQUIRING 4 TO 6 STICHES.
April 4, 1989OH · Metal/Non-Metaldrill operatorMACHINERY
MUD ON DRILL STEEL LIFTED STEEL COLLAR ABOUT 3 FEET, COLLAR CAME LOOSE FALLING ON FINGER AS DRILLER WAS TRYING TO LINE UP DRILL STEEL. CUT DFINGER, REQURING STICHES.
1986 · 1 incident
December 16, 1986OH · Metal/Non-Metaldrill operatorMACHINERY
WHILE USING A H2DRAULIC PRESS A LARGE STEEL BLOCK WEIGHING APPROX 20 LBS FELL ON TO EMPLOYEES FOOT CUTTING THROUGH SHOE SOCK FLESH AND TO THE BONE DID NOT APPEAR TO BE SERIOUS UNTIL INFECTION SET IN 3
A WIDE PLANK WAS PLACED ACROSS THE INSIDE OF A BOTTOMLESS V CHUTE UNDER A SCREEEN A SHIFTING OF WEIGHT CAUSED THE PLANK TO MOVE OR DROP AND EMP FELL INTO THE BINE BELOW HE CONTACTED THE SLOPE OF THE BIN AGAINST LOWER BACK AND THEN SLID DOWN THIS SLOPE TO THE CLOSED BIN GATE FALL WAS FEET FIRSAT THE CONTACT WITH THE BIN SLOPE BRUISED LOWER BACK