Portable #1: 17 MSHA citations Metal/Non-Metal
Portable #1 has $14K 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
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2009
17
citations
10
significant & substantial
$13,771
proposed penalties
$13,771
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2009
14
inspections on record
155
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: 155 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Imminent-danger orders
ⓘ
A Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.1
Section 107(a) orders
Most recent order: 2023-08-28.
On record since 2023.
Source: MSHA imminent-danger order records, updated weekly.
Portable #1 has $14K 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.$14K
proposed penalties
$14K
current assessed
$14K
paid to date
$0
outstanding
16 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2023-08-29.
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.62.5%
significant & substantial
56.2%
high negligence or reckless
62.5%
reasonably likely or greater
75.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 0.0% low, 43.8% moderate, 56.2% 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.Area samples (mill and shop air)
Last sampled: 2025-07-222
samples
Show the individual readings (4)
| Date | Contaminant | Concentration | Limit | Conc / limit | Area sampled |
|---|---|---|---|---|---|
| 2025-07-22 | ANALYZED BULK DUST MASS | 0 | SF ORE PROCESSING | ||
| 2025-07-22 | QUARTZ (BULK DUST) | 0 | SF ORE PROCESSING | ||
| 2025-07-22 | ANALYZED BULK DUST MASS | 0 | SF ACTIVE MINING | ||
| 2025-07-22 | QUARTZ (BULK DUST) | 0 | SF ACTIVE MINING |
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
- Maverick Rentals LLP 2009 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
| Year | Employees |
|---|---|
| 2026 | 2 |
| 2025 | 2 |
| 2024 | 2 |
| 2023 | 2 |
| 2022 | 3 |
| 2013 | 0 |
| 2012 | 2 |
| 2011 | 2 |
| 2010 | 2 |
| 2009 | 2 |
Source: MSHA quarterly employment and production, updated weekly.
Portable #1 sits in Cass County, Nebraska, where the Census mining category is 0.8% 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.Cass County, Nebraska · Population 26,963
0.8%
Mining share of county employment
$88,255
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 | 32 | 0 | 0 | 0.0 |
| 2026 Q1 | 15 | 0 | 0 | 0.0 |
| 2025 Q4 | 15 | 0 | 0 | 0.0 |
| 2025 Q3 | 7 | 0 | 0 | 0.0 |
| 2025 Q2 | 22 | 0 | 0 | 0.0 |
| 2025 Q1 | 62 | 0 | 0 | 0.0 |
| 2024 Q4 | 74 | 0 | 0 | 0.0 |
| 2024 Q3 | 82 | 0 | 0 | 0.0 |
Show 27 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q2 | 12 | 0 | 0 | 0.0 |
| 2024 Q1 | 4 | 0 | 0 | 0.0 |
| 2023 Q4 | 3 | 0 | 0 | 0.0 |
| 2023 Q3 | 81 | 7 | 5 | 86419.8 |
| 2023 Q2 | 85 | 0 | 0 | 0.0 |
| 2023 Q1 | 9 | 0 | 0 | 0.0 |
| 2022 Q4 | 19 | 0 | 0 | 0.0 |
| 2022 Q3 | 34 | 0 | 0 | 0.0 |
| 2013 Q3 | 0 | 0 | 0 | |
| 2013 Q2 | 0 | 0 | 0 | |
| 2013 Q1 | 0 | 0 | 0 | |
| 2012 Q4 | 83 | 0 | 0 | 0.0 |
| 2012 Q3 | 159 | 0 | 0 | 0.0 |
| 2012 Q2 | 459 | 0 | 0 | 0.0 |
| 2012 Q1 | 0 | 0 | 0 | |
| 2011 Q4 | 137 | 0 | 0 | 0.0 |
| 2011 Q3 | 459 | 0 | 0 | 0.0 |
| 2011 Q2 | 444 | 0 | 0 | 0.0 |
| 2011 Q1 | 575 | 1 | 0 | 1739.1 |
| 2010 Q4 | 518 | 0 | 0 | 0.0 |
| 2010 Q3 | 567 | 0 | 0 | 0.0 |
| 2010 Q2 | 390 | 4 | 2 | 10256.4 |
| 2010 Q1 | 94 | 0 | 0 | 0.0 |
| 2009 Q4 | 72 | 0 | 0 | 0.0 |
| 2009 Q3 | 420 | 0 | 0 | 0.0 |
| 2009 Q2 | 854 | 1 | 0 | 1171.0 |
| 2009 Q1 | 417 | 0 | 0 | 0.0 |
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.