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513500: 10 MSHA citations Metal/Non-Metal

Controlled by Knife River Corporation
Sauk Rapids, Benton County, MN  ·  Intermittent
MSHA Mine ID: 2103872

513500 has $1K in proposed MSHA penalties and $0 outstanding across 1 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
3
Years on record
2020–2023
Latest incident
Aug 2023
Compliance record
MSHA citations since 2016
10
citations
1
significant & substantial
$1,188
proposed penalties
$1,188
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Knife River Corporation North Central's full MSHA compliance history →
Inspection activity
MSHA inspections since 2016
15
inspections on record
204
inspection hours
n/a
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: 204 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

513500 has $1K in proposed MSHA penalties and $0 outstanding across 1 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.
$1K
proposed penalties
$1K
current assessed
$1K
paid to date
$0
outstanding
9 assessments are final orders; 1 contested dockets.
Of $200 in penalties contested before the Commission, $200 was upheld in final decisions.
As of the most recent assessment on 2023-10-04.
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.
11.1%
significant & substantial
0.0%
high negligence or reckless
11.1%
reasonably likely or greater
66.7%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 44.4% low, 55.6% moderate, 0.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
When citations were contested
ⓘ Contesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
1 citations taken to the federal commission · 10% of citations on record
  • Stood as issued 1 · 100%
100%
S&S designation survived the contest
ⓘ Counts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 1 decided S&S contests · industry: 79%
0%
Penalty reduction in decided contests
$200 proposed, $200 after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2016-12-28.
Contested penalties
ⓘ A reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Docket Decision Judge Year Proposed / upheld
LAKE 2017-0115 Dismissal Miller 2017 $200 → $200
Source: FMSHRC civil penalty dockets and decisions (public record), 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: 2023-11-01
33%
of limit-tested samples over the exposure limit
16
samples
12
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz124 over
  • Respirable dust, <.1mg4
Show the individual readings (16)
Date Contaminant Concentration Limit Conc / limit Occupation
2023-11-01 Quartz, respirable, >1% Qtz 0.62 0.61 1.02 Crusher Oper/Worker
2023-09-19 Quartz, respirable, >1% Qtz 1.52 0.63 2.41 Crusher Oper/Worker
2022-10-26 Quartz, respirable, >1% Qtz 0.71 0.69 1.03 Front-end Loader Operator
2022-10-26 Quartz, respirable, >1% Qtz 0.75 0.68 1.10 Crusher Oper/Worker
2023-11-01 Quartz, respirable, >1% Qtz 0.29 0.85 0.34 Front-end Loader Operator
2023-11-01 Respirable dust, <.1mg 0 Crusher Oper/Worker
2023-11-01 Respirable dust, <.1mg 0 Backhoe Operator
2023-09-19 Quartz, respirable, >1% Qtz 0.46 0.66 0.70 Crusher Oper/Worker
2023-09-19 Respirable dust, <.1mg 0 Backhoe Operator
2023-09-19 Quartz, respirable, >1% Qtz 0.17 0.67 0.25 Front-end Loader Operator
2022-10-26 Quartz, respirable, >1% Qtz 0.27 0.7 0.39 Cleanup Man
2018-11-14 Respirable dust, <.1mg 0 Backhoe Operator
2018-11-14 Quartz, respirable, >1% Qtz 0.53 1.06 0.50 Crusher Oper/Worker
2018-11-14 Quartz, respirable, >1% Qtz 0.38 0.76 0.50 Crusher Oper/Worker
2016-08-31 Quartz, respirable, >1% Qtz 0.27 0.51 0.53 Crusher Oper/Worker
2016-08-31 Quartz, respirable, >1% Qtz 0.13 1.06 0.12 Crusher Oper/Worker
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.
Ownership history
  1. Knife River Corporation North Central 2016 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 3
2025 4
2024 4
2023 5
2022 5
2021 4
2020 4
2019 4
2018 4
2017 3
2016 3
Source: MSHA quarterly employment and production, updated weekly.

513500 sits in Benton County, Minnesota, 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.
Benton County, Minnesota · Population 41,458
0.1%
Mining share of county employment
$71,480
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 2,413 0 0 0.0
2026 Q1 1 0 0 0.0
2025 Q4 2,641 0 0 0.0
2025 Q3 2,377 0 0 0.0
2025 Q2 1,691 0 0 0.0
2025 Q1 49 0 0 0.0
2024 Q4 2,641 0 0 0.0
2024 Q3 3,169 0 0 0.0
Show 34 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 3,120 0 0 0.0
2024 Q1 1 0 0 0.0
2023 Q4 2,161 2 0 925.5
2023 Q3 2,341 0 0 0.0
2023 Q2 3,121 0 0 0.0
2023 Q1 196 0 0 0.0
2022 Q4 1,028 0 0 0.0
2022 Q3 507 1 0 1972.4
2022 Q2 3,012 0 0 0.0
2022 Q1 121 0 0 0.0
2021 Q4 134 0 0 0.0
2021 Q3 385 0 0 0.0
2021 Q2 432 0 0 0.0
2021 Q1 91 0 0 0.0
2020 Q4 251 0 0 0.0
2020 Q3 472 0 0 0.0
2020 Q2 495 0 0 0.0
2020 Q1 24 0 0 0.0
2019 Q4 352 0 0 0.0
2019 Q3 465 0 0 0.0
2019 Q2 523 0 0 0.0
2019 Q1 31 0 0 0.0
2018 Q4 348 3 0 8620.7
2018 Q3 571 0 0 0.0
2018 Q2 612 0 0 0.0
2018 Q1 168 0 0 0.0
2017 Q4 348 0 0 0.0
2017 Q3 385 0 0 0.0
2017 Q2 552 0 0 0.0
2017 Q1 1 0 0 0.0
2016 Q4 539 1 1 1855.3
2016 Q3 445 3 0 6741.6
2016 Q2 841 0 0 0.0
2016 Q1 1 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

3 on file

2023 · 1 incident

August 29, 2023 MN · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker MACHINERY
Knife River Corporation North Central · Rubbed or abraded

Removing a bolt with an impactor to replace the wear plate the carriage bolt moved up. Employee pushed down on the bolt and the sharp edge on the bolt caught their glove pulling a finger down on the rotating bolt cutting their finger.

2022 · 1 incident

2020 · 1 incident