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: 238 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Columbia City has $3K 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.
$3K
proposed penalties
$3K
current assessed
$3K
paid to date
$0
outstanding
19 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-05-26.
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: 2026-05-27
9
samples
0
limit-tested
Most sampled contaminants
Respirable dust, <.1mg7
Quartz, respirable, >1% Qtz1
Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (9)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-05-27
Respirable dust, <.1mg
0
Utility Man
2026-05-27
Respirable dust, <.1mg
0
Utility Man
2023-09-13
Respirable dust, <.1mg
0
Dredge/Barge Operator
2023-09-13
Respirable dust, <.1mg
0
Front-end Loader Operator
2019-10-09
Quartz, respirable, >1% Qtz
0.64
Front-end Loader Operator
2019-10-09
Unlisted Particulate, respirable, <1% Qtz
0.22
Dredge/Barge Operator
2019-10-09
Respirable dust, <.1mg
0
Front-end Loader Operator
2016-11-01
Respirable dust, <.1mg
0
Washer Operator
2016-11-01
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
3
2025
3
2024
4
2023
4
2022
4
2021
4
2020
4
2019
4
2018
4
2017
3
2016
3
Source: MSHA quarterly employment and production, updated weekly.
Columbia City sits in Whitley County, Indiana, where the Census mining category is 0.2% 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.
Whitley County, Indiana · Population 34,388
0.2%
Mining share of county employment
$75,790
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
1,772
1
0
564.3
2026 Q1
1,000
0
0
0.0
2025 Q4
1,786
0
0
0.0
2025 Q3
1,524
0
0
0.0
2025 Q1
1,402
0
0
0.0
2024 Q4
2,290
0
0
0.0
2024 Q3
2,148
0
0
0.0
2024 Q2
2,499
0
0
0.0
Show 33 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q1
2,175
0
0
0.0
2023 Q4
2,309
0
0
0.0
2023 Q3
2,371
0
0
0.0
2023 Q2
2,348
0
0
0.0
2023 Q1
2,192
0
0
0.0
2022 Q4
2,456
0
0
0.0
2022 Q3
2,189
0
0
0.0
2022 Q2
2,067
2
0
967.6
2022 Q1
2,016
0
0
0.0
2021 Q4
2,364
0
0
0.0
2021 Q3
2,567
0
0
0.0
2021 Q2
2,127
4
3
1880.6
2021 Q1
1,388
4
1
2881.8
2020 Q4
2,496
0
0
0.0
2020 Q3
2,470
0
0
0.0
2020 Q2
2,412
0
0
0.0
2020 Q1
1,957
0
0
0.0
2019 Q4
2,621
2
0
763.1
2019 Q3
2,635
0
0
0.0
2019 Q2
2,297
0
0
0.0
2019 Q1
1,900
0
0
0.0
2018 Q4
2,494
0
0
0.0
2018 Q3
2,677
0
0
0.0
2018 Q2
2,092
0
0
0.0
2018 Q1
1,446
1
1
691.6
2017 Q4
1,941
0
0
0.0
2017 Q3
1,956
0
0
0.0
2017 Q2
1,757
0
0
0.0
2017 Q1
1,327
0
0
0.0
2016 Q4
1,641
4
1
2437.5
2016 Q3
1,733
0
0
0.0
2016 Q2
1,422
0
0
0.0
2016 Q1
544
1
0
1838.2
No fatalities recorded at this mine.
Reportable incidents
2 on file
2026 · 2 incidents
August 3, 2026IN · Metal/Non-Metalminer, prospector, necMACHINERY
Miner was using a grinder in the shop on 8/3/26. At 10:00 that morning they talked about their eye watering and was irritated. EE continued to work the rest of the day. 8/4/26 Miner came to work in the morning with an eye swollen. EE was taken to the local clinic to be seen for the eye. Clinic advised them to take the rest of the day off and to have a follow up appointment 8/5/26.
Pulling Poly Deck panels out using pin extractor tool. While hammering tool into place the tool popped out from poly deck panels. Struck employee in the mouth causing their lip to bleed and chipping a tooth.
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