Umpqua Mobile Crushing has had no fatalities among 1 reportable incident since 2026.
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)
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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: 2026-09-14
Most sampled contaminants
Show the individual readings (3)
| Date |
Contaminant |
Concentration |
Limit |
Conc / limit |
Occupation |
| 2026-09-14 |
Respirable dust, <.1mg |
0 |
|
|
Front-end Loader Operator |
| 2026-09-14 |
Respirable dust, <.1mg |
0 |
|
|
Shovel Operator |
| 2026-09-14 |
Respirable dust, <.1mg |
0 |
|
|
Truck Driver |
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.
Local economic context
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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.
Marion County, Oregon · Population 346,532
0.0%
Mining share of county employment
$74,624
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; earlier incidents are counted but not rate-adjusted, though reported hours reach back to 1983. 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 |
| 2025 Q1 |
0 |
0 |
0 |
|
| 2024 Q4 |
192 |
0 |
0 |
0.0 |
| 2024 Q3 |
150 |
0 |
0 |
0.0 |