Data / Mines / Washington / Thorndyke Pit
Thorndyke Pit: 16 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Thorndyke Pit is an active construction sand and gravel surface mine in Jefferson County, Washington, operated by Seton Construction Inc with 2 employees on MSHA's record (mine ID 4503780). Since January 1, 2022 MSHA inspectors issued 16 citations and orders there with $2,376 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch Thorndyke Pit (MSHA mine ID 4503780) in Jefferson County, Washington: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 4503780
- Status
- Active since April 18, 2022
- Main commodity
- Construction sand and gravel
- Mine type
- Surface
- County
- Jefferson County, Washington
- Nearest town
- Port Ludlow
- Operator
- Seton Construction Inc
- Employees
- 2
- MSHA field office
- Kent WA Field Office
- Citations and orders since January 1, 2022
- 16
- Significant and substantial
- 4 (25.0%)
- Closure orders
- 0
- High negligence or reckless
- 1
- Proposed penalties
- $2,376
- Amount paid so far
- $2,376
- Inspections
- 14
- Inspector hours on site
- 54
- Citations per inspection
- 1.14 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- May 28, 2026
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 |
|---|---|---|---|---|
| 2023 | 2 | 0 | $286 | 0 |
| 2024 | 6 | 1 | $882 | 0 |
| 2025 | 7 | 3 | $1,057 | 0 |
| 2026 | 1 | 0 | $151 | 0 |
Standards cited most at Thorndyke Pit
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 56.20003 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14205 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12025 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.11012 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14103 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14130 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.23002 | Surface metal and nonmetal mines | 1 |
Other open mines in Jefferson County, Washington
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Shine Facility | Miles Sand & Gravel Co Inc | Jefferson County, WA | Construction sand and gravel | 16 | 39 |
| Cotton Pit & Plant | Shold Excavating Inc DBA Cotton Redi Mix | Jefferson County, WA | Construction sand and gravel | 5 | 38 |
| Penny Creek Rock Products | JJC Resources, LLC | Jefferson County, WA | Crushed, broken sandstone | 2 | 14 |
| New Shine Quarry | New Shine Quarry LLC | Jefferson County, WA | Construction sand and gravel | 2 | 13 |
| St. Regis Gravel Pit | JJC Resources, LLC | Jefferson County, WA | Sand, common | 2 | 5 |
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.