US Aggregates - Thorntown Sand & Gravel has $5K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
11
Years on record
1990–2021
Latest incident
Jul 2021
Compliance record
MSHA citations since 2001
28
citations
7
significant & substantial
$4,513
proposed penalties
$4,513
paid to date
100% of proposed penalties paid to date, a $0 gap.
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: 400 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
US Aggregates - Thorntown Sand & Gravel 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
28 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-04-28.
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: 2025-06-17
6
samples
0
limit-tested
Most sampled contaminants
Respirable dust, <.1mg6
Show the individual readings (6)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2025-06-17
Respirable dust, <.1mg
0
Utility Man
2025-03-06
Respirable dust, <.1mg
0
Crusher Oper/Worker
2022-08-31
Respirable dust, <.1mg
0
Hydrating Plant Operator
2022-08-31
Respirable dust, <.1mg
0
Front-end Loader Operator
2017-09-20
Respirable dust, <.1mg
0
Screen/Scalper Operator
2017-09-20
Respirable dust, <.1mg
0
Dredge/Barge 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.
US Aggregates - Thorntown Sand & Gravel 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
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 Indiana, metal and nonmetal mining averaged 1.61 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
2023 *
0.00
0.00
0.000
2022 *
0.00
0.00
0.000
2021 *
9.46
9.46
0.000
2001 *
7.72
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
10
2025
9
2024
10
2023
10
2022
7
2021
7
2020
6
2019
6
2018
7
2017
7
2016
5
2005
2
2004
4
2003
1
2002
4
2001
10
2000
8
Source: MSHA quarterly employment and production, updated weekly.
US Aggregates - Thorntown Sand & Gravel sits in Boone 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.
Boone County, Indiana · Population 72,827
0.1%
Mining share of county employment
$104,865
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
6,524
1
0
153.3
2026 Q1
3,673
0
0
0.0
2025 Q4
5,838
1
0
171.3
2025 Q3
5,732
0
0
0.0
2025 Q2
5,105
0
0
0.0
2025 Q1
4,650
0
0
0.0
2024 Q4
5,547
0
0
0.0
2024 Q3
6,045
0
0
0.0
Show 55 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
7,074
6
1
848.2
2024 Q1
4,628
0
0
0.0
2023 Q4
5,138
1
1
194.6
2023 Q3
8,420
0
0
0.0
2023 Q2
7,523
0
0
0.0
2023 Q1
4,530
0
0
0.0
2022 Q4
5,939
0
0
0.0
2022 Q3
5,640
0
0
0.0
2022 Q2
5,669
0
0
0.0
2022 Q1
3,268
1
0
306.0
2021 Q4
4,944
1
0
202.3
2021 Q3
5,621
0
0
0.0
2021 Q2
5,945
6
2
1009.3
2021 Q1
4,629
0
0
0.0
2020 Q4
4,919
0
0
0.0
2020 Q3
5,405
0
0
0.0
2020 Q2
5,029
2
1
397.7
2020 Q1
2,850
1
1
350.9
2019 Q4
4,522
0
0
0.0
2019 Q3
4,330
0
0
0.0
2019 Q2
4,462
0
0
0.0
2019 Q1
3,471
0
0
0.0
2018 Q4
3,915
2
0
510.9
2018 Q3
5,010
0
0
0.0
2018 Q2
4,420
0
0
0.0
2018 Q1
3,425
0
0
0.0
2017 Q4
3,602
0
0
0.0
2017 Q3
5,572
0
0
0.0
2017 Q2
4,796
0
0
0.0
2017 Q1
3,495
0
0
0.0
2016 Q4
4,160
1
0
240.4
2016 Q3
4,779
1
1
209.2
2016 Q2
1,686
0
0
0.0
2005 Q2
0
0
0
2005 Q1
1,588
0
0
0.0
2004 Q4
2,215
0
0
0.0
2004 Q3
2,436
0
0
0.0
2004 Q2
2,534
0
0
0.0
2004 Q1
2,221
0
0
0.0
2003 Q4
1,300
0
0
0.0
2003 Q3
648
0
0
0.0
2003 Q2
627
0
0
0.0
2003 Q1
391
0
0
0.0
2002 Q4
645
0
0
0.0
2002 Q3
669
1
0
1494.8
2002 Q2
791
0
0
0.0
2002 Q1
6,194
0
0
0.0
2001 Q4
7,050
0
0
0.0
2001 Q3
7,268
0
0
0.0
2001 Q2
6,699
3
0
447.8
2001 Q1
4,886
0
0
0.0
2000 Q4
4,587
0
0
0.0
2000 Q3
5,083
0
0
0.0
2000 Q2
5,170
0
0
0.0
2000 Q1
4,045
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
11 on file
2021 · 1 incident
July 10, 2021IN · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerMACHINERY
Welding overhead in a chute, a piece of weld slag burned through EE's pants & into boot, causing burn to foot. Initial care was first aid, but EE was later restricted from work.
2020 · 1 incident
February 5, 2020IN · Metal/Non-Metalcrane operator, mobile equipment operator (meo), dragline operator, dropball operator, riggerHANDTOOLS (NONPOWERED)
Using a Come Along to pull a piece of metal into place to weld it. EE was jacking the Come Along & a link in the chain on the Come Along failed, springing back and struck EE in the face-above eye and on forehead.
2017 · 2 incidents
September 9, 2017IN · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
While changing out roller, they reached inside framework to move the roller, roller stuck on conveyor belt. They pulled hard, roller broke free, caused hand to contact with sharp metal on old conveyor truss framework.
May 24, 2017IN · Metal/Non-Metalassistant mine foreman, assistant mine managerHANDLING OF MATERIALS
A log got stuck in the dredge hopper. EE got supports to block the grizzly from moving. EE was positioning the support by reaching through the handrails. The support slipped, the grizzly kept descending and struck EE's hardhat. EE pulled head back, cutting nose on the handrail.
2001 · 1 incident
May 24, 2001IN · Metal/Non-Metalbackhoe operator, trackhoe operator, crane operatorHANDLING OF MATERIALS
EMPLOYEE'S HARD HAT DROPPED AND EMPLOYEE REACHED DOWN TO PICK IT UP AND HE STRUCK IS HEAD ON THE STEEL GUARD ON THE CRANE. EMPLOYEE CUT THE TOP OF HIS HEAD AND HAD TO HAVE 2 STITCHES.
2000 · 2 incidents
August 21, 2000IN · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
EMPLOYEE WAS REMOVING ROCK FROM THE CRUSHER. WHILE LIFTING THE ROCK HE FELT SOMETHING PULL IN HIS LOWER STOMACH. HE WAS FIRST DIAGNOSED AS LOWER ABDOMINAL STRAIN, BUT NOW IS BEING CHECKED FOR KIDNEY STONES. EMPLOYEE IS RESTRICTED.
February 17, 2000IN · Metal/Non-Metalminer, necMACHINERY
EMPLOYEE WAS WELDING THE FEED HOPPER. HOT SLAG GOT ON EMPLOYEE AND IT WENT THROUGH HIS COVERALLS & BURNED HIS EYE. HE USED OINTMENT FROM HOME. LATER IT BECAME INFECTED, HE WENT TO DOCTOR ON 2-23-2000.
1998 · 1 incident
October 13, 1998IN · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanMACHINERY
EMP WAS WALKING ON 12" PIPELINE TO AVOID WATER. SLIPPED, TWISTING RIGHT ANKLE. RESTRICTIONS FOR 1 WEEK.
1991 · 1 incident
March 14, 1991IN · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS