Mining Incidents

Thunder: 2 MSHA citations Metal/Non-Metal

Northern Mining & Aggregate Solutions, LLP · Surface
Sidney, Richland County, MT  ·  Abandoned
MSHA Mine ID: 2402647

Thunder has $200 in proposed MSHA penalties and $100 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
0
Years on record
Latest incident
Compliance record
MSHA citations since 2013
2
citations
0
significant & substantial
$200
proposed penalties
$100
paid to date
50% of proposed penalties paid to date, a $100 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2013
2
inspections on record
9
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: 9 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Thunder has $200 in proposed MSHA penalties and $100 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.
$200
proposed penalties
$200
current assessed
$100
paid to date
$100
outstanding
2 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2013-08-29.
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.
0.0%
significant & substantial
50.0%
high negligence or reckless
0.0%
reasonably likely or greater
0.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 0.0% low, 50.0% moderate, 50.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.

Thunder recorded 0.00 reportable injury cases per 100 full-time workers in 2013.

Injury rate, 2013
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
No reportable injury cases in any year shown. Employee-hours were reported in each of those years, so these are true zeros rather than missing data. Citations, listed in the compliance record above, are inspector-found violations and are counted separately from worker injuries.
Below average. The US metal and nonmetal mining average was 2.46 and the all-US-mining average was 2.99 cases per 100 workers.
In Montana, metal and nonmetal mining averaged 3.25 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.
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.
Ownership history
  1. Northern Mining & Aggregate Solutions, LLP 2013 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2014 0
2013 7
Source: MSHA quarterly employment and production, updated weekly.

Thunder sits in Richland County, Montana, where the Census mining category is 8.1% 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.
Richland County, Montana · Population 11,329
8.1%
Mining share of county employment
$69,578
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
2014 Q1 0 0 0
2013 Q4 4,361 0 0 0.0
2013 Q3 7,418 1 0 134.8
2013 Q2 8,736 0 0 0.0
2013 Q1 704 1 0 1420.5

No reportable incidents on file.

MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.