Data / Mines / Washington / Portable 1
Portable 1, King County, Washington: 1 MSHA citation
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Portable 1 is an active crushed, broken stone surface mine in King County, Washington, operated by Severson Road Contractors with 2 employees on MSHA's record (mine ID 4503808). Since January 1, 2022 MSHA inspectors issued 1 citation and orders there with $151 in proposed penalties, and 1 accident report was filed there, with 1 injury or illness case.
The request: Watch Portable 1 (MSHA mine ID 4503808) in King County, Washington: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 4503808
- Status
- Active since May 8, 2026
- Main commodity
- Crushed, broken stone
- Mine type
- Surface
- County
- King County, Washington
- Nearest town
- Ravensdale
- Operator
- Severson Road Contractors
- Employees
- 2
- MSHA field office
- Kent WA 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
- $151
- Amount paid so far
- $151
- Inspections
- 3
- Inspector hours on site
- 7
- Citations per inspection
- 0.33 (all mines 2.30)
- Accident reports
- 1
- Injury and illness cases
- 1
- Fatalities
- 0
- Latest MSHA record
- May 1, 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 |
|---|---|---|---|---|
| 2025 | 1 | 0 | $151 | 0 |
| 2026 | 0 | 0 | $0 | 1 |
Standards cited most at Portable 1
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 56.14100 | Surface metal and nonmetal mines | 1 |
Injury and illness cases at Portable 1
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 1 |
What the accident reports at Portable 1 describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Slip or fall of person | 1 |
Equipment named in accident reports at Portable 1
| Equipment | Reports |
|---|---|
| Screen | 1 |
Other open mines in King County, Washington
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Seattle Plant | Ash Grove Cement Company | King County, WA | Cement | 83 | 357 |
| Snoqualmie S&G DBA CalPortland Company | CalPortland Company | King County, WA | Construction sand and gravel | 29 | 86 |
| Enumclaw Pit & Plant | HM Pacific Northwest Inc. | King County, WA | Construction sand and gravel | 12 | 39 |
| Issaquah Pit & Plant | Lakeside Industries, Inc | King County, WA | Construction sand and gravel | 11 | 35 |
| Auburn Facility | Central Pre-Mix Concrete Co. | King County, WA | Construction sand and gravel | 3 | 31 |
| Ryterra LLC | Ryterra | King County, WA | Crushed, broken stone | 6 | 28 |
| North Bend | HM Pacific Northwest Inc. | King County, WA | Crushed, broken stone | 6 | 28 |
| Franklin Ridge Sand & Gravel | Green Section 30 LLC | King County, WA | Construction sand and gravel | 3 | 25 |
| Arcosa Specialty Materials Seattle #1890 | Acg Materials | King County, WA | Crushed, broken limestone | 12 | 22 |
| Palmer Junction Gravel Pit-Kanaskat Pit | Lakeside Industries, Inc | King County, WA | Construction sand and gravel | 5 | 19 |
| Thunder Mountain Quarry | HM Pacific Northwest Inc. | King County, WA | Crushed, broken traprock | 3 | 19 |
| Vashon Sand and Gravel DBA CalPortland | CalPortland Company | King County, WA | Construction sand and gravel | 6 | 14 |
| White River Quarry | CalPortland Company | King County, WA | Crushed, broken stone | 10 | 13 |
| Plant D | Rock Services Inc. | King County, WA | Construction sand and gravel | 2 | 12 |
| Manufacturers Mineral Co. Renton Plant | Manufacturers Mineral Company | King County, WA | Construction sand and gravel | 3 | 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.