Data / Mines / South Dakota / Centennial Quarry
Centennial Quarry: 11 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Centennial Quarry is an intermittent crushed, broken limestone surface mine in Lawrence County, South Dakota, operated by Simon Contractors with 6 employees on MSHA's record (mine ID 3901246). Since January 1, 2022 MSHA inspectors issued 11 citations and orders there with $1,927 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch Centennial Quarry (MSHA mine ID 3901246) in Lawrence County, South Dakota: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 3901246
- Status
- Intermittent since July 22, 2026
- Main commodity
- Crushed, broken limestone
- Mine type
- Surface
- County
- Lawrence County, South Dakota
- Nearest town
- Whitewood
- Operator
- Simon Contractors
- Employees
- 6
- MSHA field office
- Rapid City SD Field Office
- Citations and orders since January 1, 2022
- 11
- Significant and substantial
- 0 (0.0%)
- Closure orders
- 0
- High negligence or reckless
- 3
- Proposed penalties
- $1,927
- Amount paid so far
- $1,927
- Inspections
- 11
- Inspector hours on site
- 47
- Citations per inspection
- 1.00 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- October 7, 2025
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 | 2 | 0 | $511 | 0 |
| 2023 | 7 | 0 | $1,118 | 0 |
| 2024 | 1 | 0 | $147 | 0 |
| 2025 | 1 | 0 | $151 | 0 |
Standards cited most at Centennial 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 | 3 |
| 30 CFR 56.14110 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14103 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12023 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.11003 | Surface metal and nonmetal mines | 1 |
Other open mines in Lawrence County, South Dakota
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Coeur Wharf | Wharf Resources (USA) Inc | Lawrence County, SD | Gold ore | 270 | 137 |
| Plant #1 | North Star Construction | Lawrence County, SD | Construction sand and gravel | 3 | 25 |
| Portable Plant | Rogers Construction, Inc | Lawrence County, SD | Construction sand and gravel | 2 | 12 |
| Plant 2 | Johner Gravel, Inc. | Lawrence County, SD | Construction sand and gravel | 2 | 11 |
| Plant 1 | Johner Gravel, Inc. | Lawrence County, SD | Construction sand and gravel | 2 | 9 |
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.