Black Diamond Graphite Mine Metal/Non-Metal
United Minerals Company
· Surface
Controlled by
Graphite Sales Inc
Broadwater County,
MT
·
Abandoned
MSHA Mine ID: 2401411
MSHA record for Black Diamond Graphite Mine (mine ID 2401411). 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
- Black Diamond Graphite Company 1978 to 1982
- United Minerals Company 1982 to present
Source: MSHA controller and operator history, updated weekly.
Black Diamond Graphite Mine sits in Broadwater County, Montana, 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.Broadwater County, Montana · Population 7,310
2.5%
Mining share of county employment
$63,636
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
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.