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: 211 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Hamilton has $4K 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.
$4K
proposed penalties
$4K
current assessed
$4K
paid to date
$0
outstanding
27 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-01-07.
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: 2025-09-10
3
samples
0
limit-tested
Most sampled contaminants
Respirable dust, <.1mg2
Quartz, respirable, >1% Qtz1
Show the individual readings (3)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2025-09-10
Respirable dust, <.1mg
0
Front-end Loader Operator
2025-09-10
Quartz, respirable, >1% Qtz
0.26
Mechanic
2019-03-20
Respirable dust, <.1mg
0
Front-end Loader 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
4
2025
2
2024
1
2023
1
2022
1
2021
1
2020
1
2019
2
2018
2
2017
1
Source: MSHA quarterly employment and production, updated weekly.
Hamilton sits in Skagit County, Washington, 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.
Skagit County, Washington · Population 130,407
0.1%
Mining share of county employment
$85,474
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
634
0
0
0.0
2026 Q1
525
1
0
1904.8
2025 Q4
542
0
0
0.0
2025 Q3
603
0
0
0.0
2025 Q2
428
1
0
2336.4
2025 Q1
457
3
0
6564.6
2024 Q4
423
0
0
0.0
2024 Q3
505
0
0
0.0
Show 30 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
405
0
0
0.0
2024 Q1
354
0
0
0.0
2023 Q4
464
1
0
2155.2
2023 Q3
428
0
0
0.0
2023 Q2
434
0
0
0.0
2023 Q1
435
0
0
0.0
2022 Q4
328
1
0
3048.8
2022 Q3
481
0
0
0.0
2022 Q2
437
1
0
2288.3
2022 Q1
465
0
0
0.0
2021 Q4
359
0
0
0.0
2021 Q3
480
0
0
0.0
2021 Q2
424
0
0
0.0
2021 Q1
382
0
0
0.0
2020 Q4
307
4
1
13029.3
2020 Q3
385
1
0
2597.4
2020 Q2
17
0
0
0.0
2020 Q1
446
2
0
4484.3
2019 Q4
262
0
0
0.0
2019 Q3
520
0
0
0.0
2019 Q2
557
3
1
5386.0
2019 Q1
491
3
0
6110.0
2018 Q4
509
0
0
0.0
2018 Q3
562
0
0
0.0
2018 Q2
641
0
0
0.0
2018 Q1
396
3
0
7575.8
2017 Q4
132
0
0
0.0
2017 Q3
162
0
0
0.0
2017 Q2
429
0
0
0.0
2017 Q1
547
3
1
5484.5
No fatalities recorded at this mine.
Reportable incidents
2 on file
2024 · 1 incident
December 4, 2024WA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDTOOLS (NONPOWERED)