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MSHA mine register by county

Mines in Humboldt County, Iowa

Humboldt County, Iowa has 9 mines on MSHA's register: 1 active, 1 intermittent, 7 abandoned. 15 accidents have been reported at these mines between 1995 and 2012. Inspectors have issued 83 citations.

Every mine MSHA has registered in Humboldt County, working or not, with the accident, fatality and citation record each one carries on this site. Active mines are listed first, then the rest by the weight of their record.

Abandoned and historical mine features in Humboldt County →

Mines on register
9
Active
1
Fatalities on record
0
Citations issued
83
0 underground · 9 surface · 0 facilities 0 coal · 9 metal and non-metal 1 intermittent 7 abandoned 15 reported accidents, 1995–2012
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.
Humboldt County, Iowa · Population 9,573
0.3%
Mining share of county employment
$66,994
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
On the map 
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MSHA-registered mine, any status

Mines plot only where MSHA holds a surveyed coordinate for the site; mines the agency locates to a town, county or state centroid are in the counts and the list above but not drawn. Click a point for the mine's status and record.

Operators with the most mines herecurrent operator of record
Operator Mines Active Fatalities
Welp & Mc Carten Inc 3 0 0
P & M Stone Company Inc 2 0 0
Anderson Aggregates, LLC 1 0 0
Humboldt Concrete Products Division 1 0 0
Martin Marietta Materials Inc. 1 1 0
Midwest Limestone Company Inc 1 0 0
Mines in Humboldt County9 on register
  1. Pedersen Quarry
    Surface metal/non-metal · Martin Marietta Materials Inc. · MSHA ID 1302192
    Active
  2. Anderson Quarry
    Surface metal/non-metal · Anderson Aggregates, LLC · MSHA ID 1302512
    Intermittent
  3. Bradgate Pit And Plant
    Surface metal/non-metal · Midwest Limestone Company Inc · MSHA ID 1300787
    Abandoned
  4. Bradgate Quarry
    Surface metal/non-metal · Welp & Mc Carten Inc · MSHA ID 1300149
    Abandoned
  5. Griffith Quarry
    Surface metal/non-metal · Welp & Mc Carten Inc · MSHA ID 1300397
    Abandoned
  6. Humboldt Pit & Plant
    Surface metal/non-metal · Humboldt Concrete Products Division · MSHA ID 1300695
    Abandoned
  7. Nelson Pit
    Surface metal/non-metal · P & M Stone Company Inc · MSHA ID 1301895
    Abandoned
  8. Pederson Pit
    Surface metal/non-metal · P & M Stone Company Inc · MSHA ID 1301894
    Abandoned
  9. Rutland Pit
    Surface metal/non-metal · Welp & Mc Carten Inc · MSHA ID 1301613
    Abandoned

Status, type and operator are as reported to MSHA. Fatality and accident counts are MSHA's reportable accident records for the mine; citations are inspector-issued violations on record. Each mine's own page carries the full detail.

Other counties in IowaAll counties →
How to read these numbers

The register is MSHA's Mine Data Retrieval System: every operation ever assigned a mine ID, including ones abandoned decades ago, so the count is a history of mining in the county, not a count of working mines. A mine's county is the one its operator reported to MSHA. Fatality and accident counts start with MSHA's reportable-accident records (1983 onward); citation counts are inspector-issued violations on record. We are an independent research tool, not MSHA.