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Inertia Crusher: 34 MSHA citations Metal/Non-Metal

Aladdin, Crook County, WY  ·  Temporarily Idled
MSHA Mine ID: 4801853

Inertia Crusher has $13K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
2
Years on record
2023–2024
Latest incident
Sep 2024
Compliance record
MSHA citations since 2022
34
citations
3
significant & substantial
$12,706
proposed penalties
$12,706
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Ramsey Hill Exploration LLC's full MSHA compliance history →
Inspection activity
MSHA inspections since 2022
12
inspections on record
236
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: 236 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Inertia Crusher has $13K 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.
$13K
proposed penalties
$13K
current assessed
$13K
paid to date
$0
outstanding
34 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-11-13.
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.
8.8%
significant & substantial
5.9%
high negligence or reckless
8.8%
reasonably likely or greater
11.8%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 2.9% low, 91.2% moderate, 5.9% high, 0.0% reckless.
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: 2025-04-16
7
samples
0
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg5
  • Quartz, respirable, >1% Qtz2
Show the individual readings (7)
Date Contaminant Concentration Limit Conc / limit Occupation
2025-04-16 Respirable dust, <.1mg 0 Truck Driver
2025-04-16 Respirable dust, <.1mg 0 Backhoe Operator
2025-04-16 Respirable dust, <.1mg 0 Crusher Oper/Worker
2025-04-16 Respirable dust, <.1mg 0 Front-end Loader Operator
2022-08-18 Quartz, respirable, >1% Qtz 0.2 Front-end Loader Operator
2022-08-18 Quartz, respirable, >1% Qtz 0.16 Front-end Loader Operator
2022-08-18 Respirable dust, <.1mg 0 Backhoe 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.

Inertia Crusher recorded 9.03 reportable injury cases per 100 full-time workers in 2024.

Injury rate, 2024
ⓘ 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.
9.03
total case rate
9.03
days-away rate
0.000
fatality rate
Above average. The US metal and nonmetal mining average was 1.77 and the all-US-mining average was 2.08 cases per 100 workers.
In Wyoming, metal and nonmetal mining averaged 1.91 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. Ramsey Hill Exploration LLC 2021 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 0
2025 6
2024 9
2023 7
2022 4
Source: MSHA quarterly employment and production, updated weekly.

Inertia Crusher sits in Crook County, Wyoming, where the Census mining category is 7.1% 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.
Crook County, Wyoming · Population 7,339
7.1%
Mining share of county employment
$71,209
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 0 0 0
2025 Q4 1,653 1 0 605.0
2025 Q3 2,977 0 0 0.0
2025 Q2 4,423 2 0 452.2
2025 Q1 2,375 0 0 0.0
2024 Q4 4,994 0 0 0.0
2024 Q3 4,709 0 0 0.0
2024 Q2 5,965 0 0 0.0
Show 9 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q1 6,483 0 0 0.0
2023 Q4 6,314 1 1 158.4
2023 Q3 3,581 0 0 0.0
2023 Q2 3,212 4 1 1245.3
2023 Q1 3,814 0 0 0.0
2022 Q4 3,319 3 1 903.9
2022 Q3 2,055 15 0 7299.3
2022 Q2 1,803 0 0 0.0
2022 Q1 1,441 5 0 3469.8
No fatalities recorded at this mine.

Reportable incidents

2 on file

2024 · 1 incident

September 25, 2024 WY · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Ramsey Hill Exploration LLC · Caught in, under or between a moving and a stationary object

The plant was shut down for the day and the miner was inspecting the plant and went to inspect the crusher blow bars. The miner opened the inspection door on the crusher to check the blow bar condition. When moving the rotor to inspect the gap the miner's hand got caught between the rotor and the inspection door frame and bent EE's wrist back fracturing EE's wrist.

2023 · 1 incident

August 1, 2023 WY · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDTOOLS (NONPOWERED)
Ramsey Hill Exploration LLC · Struck by flying object

The miner was installing brackets for teeth on a loader. The brackets were tight and a sledge hammer was used to get the bracket in place. When the miner made one of the swings with the hammer a piece of the bracket chipped off and lodged in the miners left thigh. The miner was taken for medical attention to get the piece removed and stitches were used to close the wound.