Data / Mines / North Carolina / Central Rock Quarry
Central Rock Quarry: 1 MSHA citation
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Central Rock Quarry is an active crushed, broken granite surface mine in Guilford County, North Carolina, operated by Martin Marietta Materials, Inc. with 23 employees on MSHA's record (mine ID 3100050). Since January 1, 2022 MSHA inspectors issued 1 citation and orders there with $183 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch Central Rock Quarry (MSHA mine ID 3100050) in Guilford County, North Carolina: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 3100050
- Status
- Active since July 4, 1976
- Main commodity
- Crushed, broken granite
- Mine type
- Surface
- County
- Guilford County, North Carolina
- Nearest town
- Greensboro
- Operator
- Martin Marietta Materials, Inc.
- Parent company
- Martin Marietta Materials Inc
- Employees
- 23
- MSHA field office
- Sanford NC Field Office
- Citations and orders since January 1, 2022
- 1
- Significant and substantial
- 0 (0.0%)
- Closure orders
- 0
- High negligence or reckless
- 0
- Proposed penalties
- $183
- Amount paid so far
- $183
- Inspections
- 12
- Inspector hours on site
- 176
- Citations per inspection
- 0.08 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- June 2, 2026
- Citations issued to contractors here
- 4 ($586 proposed)
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 1 | 0 | $183 | 0 |
Standards cited most at Central Rock Quarry
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 1 |
Other open mines in Guilford County, North Carolina
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Jamestown | Martin Marietta Materials, Inc. | Guilford County, NC | Crushed, broken granite | 26 | 7 |
| Pomona | Martin Marietta Materials, Inc. | Guilford County, NC | Crushed, broken granite | 11 | 5 |
| Stokesdale Quarry | Vulcan Construction Materials, LLC | Guilford County, NC | Crushed, broken granite | 15 | 1 |
US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.