Mass City Pit: 12 MSHA citations Metal/Non-Metal
MSHA record for Mass City Pit (mine ID 2003709). 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
- —
Compliance record
MSHA citations since 2026
12
citations
1
significant & substantial
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2026
3
inspections on record
36
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: 36 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections 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.8.3%
significant & substantial
0.0%
high negligence or reckless
8.3%
reasonably likely or greater
8.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 75.0% low, 25.0% moderate, 0.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Ownership history
- Flint Steel Stone Products MMXIX, Inc. 2026 to present
Source: MSHA controller and operator history, updated weekly.
Mass City Pit sits in Ontonagon County, Michigan, where the Census mining category is 2.2% 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.Ontonagon County, Michigan · Population 5,870
2.2%
Mining share of county employment
$51,844
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.