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MSHA mine register by county

Mines in Howard County, Maryland

Howard County, Maryland has 5 mines on MSHA's register: 2 active, 3 abandoned. 56 accidents have been reported at these mines between 1988 and 2026. Inspectors have issued 263 citations.

Every mine MSHA has registered in Howard 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 Howard County →

Mines on register
5
Active
2
Fatalities on record
0
Citations issued
263
0 underground · 5 surface · 0 facilities 0 coal · 5 metal and non-metal 3 abandoned 56 reported accidents, 1988–2026
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.
Howard County, Maryland · Population 333,916
0.0%
Mining share of county employment
$146,982
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
Howard-Montgomery Crushed Stone 1 0 0
Jones Quarry LLC 1 0 0
Mellott Company 1 0 0
Patapsco Natural Stone Quarry LLC 1 1 0
Savage Stone, LLC 1 1 0
Mines in Howard County5 on register
  1. Savage Stone
    Surface metal/non-metal · Savage Stone, LLC · MSHA ID 1800768
    Active
  2. Patapsco Natural Stone Quarry LLC
    Surface metal/non-metal · Patapsco Natural Stone Quarry LLC · MSHA ID 1800192
    Active
  3. Jones Quarry LLC
    Surface metal/non-metal · Jones Quarry LLC · MSHA ID 1800586
    Abandoned
  4. LT106-002-Marriottsville
    Surface metal/non-metal · Mellott Company · MSHA ID 3610018
    Abandoned
  5. Howard Montgomery Crushed Stone Qry & Mi
    Surface metal/non-metal · Howard-Montgomery Crushed Stone · MSHA ID 1800015
    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 MarylandAll 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.