THUNDER BIRD GRIZZLY Metal/Non-Metal
Nielsons Inc
· Surface
Controlled by
Nielsons Holding Company
Montezuma County,
CO
·
Abandoned
MSHA Mine ID: 0504626
MSHA record for THUNDER BIRD GRIZZLY (mine ID 0504626). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.
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- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Ownership history
- Nielsons Inc 1998 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
| Year | Employees |
|---|---|
| 2000 | 13 |
Source: MSHA quarterly employment and production, updated weekly.
THUNDER BIRD GRIZZLY sits in Montezuma County, Colorado, where the Census mining category is 2.5% 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.Montezuma County, Colorado · Population 26,204
2.5%
Mining share of county employment
$63,005
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 |
|---|---|---|---|---|
| 2000 Q1 | 4,852 | 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.