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: 409 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Grider Quarry has $736 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.
$736
proposed penalties
$736
current assessed
$736
paid to date
$0
outstanding
5 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2022-06-14.
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: 2025-05-06
0%
of limit-tested samples over the exposure limit
7
samples
2
limit-tested
Most sampled contaminants
Respirable dust, <.1mg5
Nuisance dust, respirable, <1% Qtz1
Quartz, respirable, >1% Qtz1
Show the individual readings (7)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2025-05-06
Respirable dust, <.1mg
0
Front-end Loader Operator
2023-12-20
Respirable dust, <.1mg
0
Front-end Loader Operator
2021-03-31
Respirable dust, <.1mg
0
Front-end Loader Operator
2017-12-07
Respirable dust, <.1mg
0
Front-end Loader Operator
2015-07-16
Respirable dust, <.1mg
0
Front-end Loader Operator
2015-07-16
Quartz, respirable, >1% Qtz
0.74
1.72
0.43
Dry Screen Plant Operator
2015-07-16
Nuisance dust, respirable, <1% Qtz
1.1
10
0.11
Rotary Bucket Ex. 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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
1
2025
1
2024
1
2023
1
2022
1
2021
1
2020
1
2019
2
2018
2
2017
2
2016
5
2015
4
2014
3
2013
9
1989
2
1988
2
1987
2
1986
3
1985
5
1984
5
1983
5
Source: MSHA quarterly employment and production, updated weekly; years before 2000 come from MSHA's archived Part 50 employment files.
Grider Quarry sits in Cumberland County, Kentucky, where the Census mining category is 0.7% 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.
Cumberland County, Kentucky · Population 5,948
0.7%
Mining share of county employment
$39,662
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; earlier incidents are counted but not rate-adjusted, though reported hours reach back to 1983. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
EE was using the restroom, experienced a dizzy spell, blacked out, fell, and hurt shoulder. Got up, made the way back to the office nearby, while sitting in chair, EE experienced another dizzy spell and blacked out again. At that time, co-worker called ambulance.
Show 2 earlier incidentsHide earlier incidents
2016 · 1 incident
January 6, 2016KY · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerSLIP OR FALL OF PERSON
Employee was mounting a Caterpillar 966 loader EQ #23.3814. Apparently there was frost on the loader grab bars and when ee reached with left hand it slid down and ee fell backwards. EE indicated ee must have caught hands and thought left arm was broken.
1983 · 1 incident
August 22, 1983KY · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
EMP WAS STANDING NEAR SHUTE THAT WAS BEING CLEANED OUT BY OTHER PERSONS WHEN ROCK FELL OFF CHUTE 5 OR 6 FEET & HIT ON SHOULDER, THIS BRUISED SHOULDER ONLY