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: 197 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Aggregate C-19 has $618 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.
$618
proposed penalties
$618
current assessed
$618
paid to date
$0
outstanding
4 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2017-10-17.
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: 2019-05-08, 7 years ago
0%
of limit-tested samples over the exposure limit
5
samples
1
limit-tested
Most sampled contaminants
Respirable dust, <.1mg4
Quartz, respirable, >1% Qtz1
Show the individual readings (5)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2019-05-08
Respirable dust, <.1mg
0
Front-end Loader Operator
2019-05-08
Respirable dust, <.1mg
0
Front-end Loader Operator
2019-05-08
Respirable dust, <.1mg
0
Bulldozer Operator
2013-08-14
Quartz, respirable, >1% Qtz
0.44
1.37
0.32
Crusher Oper/Worker
2013-08-14
Respirable dust, <.1mg
0
Front-end Loader Operator
Area samples (mill and shop air)
Last sampled: 2016-09-15, 9 years ago
1
samples
Show the individual readings (1)
Date
Contaminant
Concentration
Limit
Conc / limit
Area sampled
2016-09-15
Quartz, respirable, >1% Qtz
1.13
SF ORE PROCESSING
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
2023
2
2022
3
2021
4
2020
3
2019
3
2018
3
2017
3
2016
3
2015
4
2014
4
2013
4
2012
5
Source: MSHA quarterly employment and production, updated weekly.
Aggregate C-19 sits in Ward County, North Dakota, where the Census mining category is 3.8% 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.
Ward County, North Dakota · Population 69,232
3.8%
Mining share of county employment
$79,273
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
While performing maintenance operations to magnet mounted on crusher EE's foot slipped. He states he felt something pop. Significant swelling developed in his lower leg prompting the subsequent medical attention. Fall protection was in use.
Related mines
Other mines operated by Aggregate Construction Inc