South Lake Stone has $10K in proposed MSHA penalties and $151 outstanding across 0 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
4
Years on record
2017–2023
Latest incident
Sep 2023
Compliance record
MSHA citations since 2015
58
citations
17
significant & substantial
$10,147
proposed penalties
$9,996
paid to date
99% of proposed penalties paid to date, a $151 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: 518 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
South Lake Stone has $10K in proposed MSHA penalties and $151 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.
$10K
proposed penalties
$10K
current assessed
$10K
paid to date
$151
outstanding
58 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-06-04.
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: 2024-09-17
0%
of limit-tested samples over the exposure limit
12
samples
2
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz7
Respirable dust, <.1mg4
Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (12)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2024-09-17
Quartz, respirable, >1% Qtz
0.23
Crusher Oper/Worker
2024-09-17
Respirable dust, <.1mg
0
Front-end Loader Operator
2024-09-17
Respirable dust, <.1mg
0
Front-end Loader Operator
2024-09-17
Quartz, respirable, >1% Qtz
0.47
Bobcat Operator
2021-10-26
Quartz, respirable, >1% Qtz
0.36
Dry Screen Plant Operator
2021-10-26
Quartz, respirable, >1% Qtz
0.3
Cleanup Man
2021-10-26
Unlisted Particulate, respirable, <1% Qtz
0.32
Front-end Loader Operator
2019-05-07
Quartz, respirable, >1% Qtz
0.32
Cleanup Man
2019-05-07
Respirable dust, <.1mg
0
Crusher Oper/Worker
2017-03-28
Quartz, respirable, >1% Qtz
0.63
0.86
0.73
Cleanup Man
2017-03-28
Respirable dust, <.1mg
0
Front-end Loader Operator
2017-03-28
Quartz, respirable, >1% Qtz
0.2
1.01
0.20
Crusher Oper/Worker
Area samples (mill and shop air)
Last sampled: 2024-09-17
2
samples
Show the individual readings (4)
Date
Contaminant
Concentration
Limit
Conc / limit
Area sampled
2024-09-17
ANALYZED BULK DUST MASS
0
MP CRUSHING
2024-09-17
QUARTZ (BULK DUST)
0
MP CRUSHING
2024-09-17
ANALYZED BULK DUST MASS
0
MP CRUSHING
2024-09-17
QUARTZ (BULK DUST)
0
MP CRUSHING
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.
South Lake Stone 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 *
3.47
3.47
0.000
2022 *
3.66
0.00
0.000
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
* 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
27
2025
23
2024
23
2023
25
2022
26
2021
23
2020
19
2019
18
2018
18
2017
18
2016
15
2015
8
Source: MSHA quarterly employment and production, updated weekly.
South Lake Stone sits in Lake 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.
Lake County, Indiana · Population 498,990
0.1%
Mining share of county employment
$68,985
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
17,934
1
0
55.8
2026 Q1
12,395
0
0
0.0
2025 Q4
16,785
0
0
0.0
2025 Q3
16,499
1
0
60.6
2025 Q2
12,858
0
0
0.0
2025 Q1
10,724
4
2
373.0
2024 Q4
10,756
0
0
0.0
2024 Q3
13,922
0
0
0.0
Show 35 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
14,150
3
0
212.0
2024 Q1
9,609
0
0
0.0
2023 Q4
14,299
7
5
489.5
2023 Q3
17,744
3
2
169.1
2023 Q2
16,782
0
0
0.0
2023 Q1
8,894
0
0
0.0
2022 Q4
13,183
2
0
151.7
2022 Q3
16,766
0
0
0.0
2022 Q2
16,160
2
0
123.8
2022 Q1
8,485
0
0
0.0
2021 Q4
12,594
2
0
158.8
2021 Q3
15,355
1
1
65.1
2021 Q2
14,591
0
0
0.0
2021 Q1
8,496
0
0
0.0
2020 Q4
10,589
0
0
0.0
2020 Q3
10,779
2
0
185.5
2020 Q2
13,158
0
0
0.0
2020 Q1
9,950
0
0
0.0
2019 Q4
10,902
1
0
91.7
2019 Q3
12,804
0
0
0.0
2019 Q2
12,182
3
0
246.3
2019 Q1
7,043
2
0
284.0
2018 Q4
11,852
2
0
168.7
2018 Q3
13,076
0
0
0.0
2018 Q2
11,522
0
0
0.0
2018 Q1
6,383
2
0
313.3
2017 Q4
8,399
3
1
357.2
2017 Q3
12,977
0
0
0.0
2017 Q2
12,834
0
0
0.0
2017 Q1
7,857
3
1
381.8
2016 Q4
10,941
4
1
365.6
2016 Q3
9,072
0
0
0.0
2016 Q2
5,667
0
0
0.0
2016 Q1
4,216
4
1
948.8
2015 Q4
3,428
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
4 on file
2023 · 1 incident
September 16, 2023IN · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerSLIP OR FALL OF PERSON
Employee was working around a hopper bin with safety harness on. Employee removed safety harness lanyard from point contact, slipped and fell causing injury from fall.
Employee was trying to cut a piece of belting. While cutting toward themselves with a utility knife, knife slipped while cutting and struck the employee in the left upper thigh. Employee received stitches.
2017 · 2 incidents
July 17, 2017IN · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanPOWERED HAULAGE