Data / Mines / Washington / Heidelberg Materials High Rock Quarry
Heidelberg Materials High Rock Quarry: 70 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Heidelberg Materials High Rock Quarry is an active crushed, broken traprock surface mine in Snohomish County, Washington, operated by HM Pacific Northwest Inc. with 32 employees on MSHA's record (mine ID 4501999). Since January 1, 2022 MSHA inspectors issued 70 citations and orders there with $20,528 in proposed penalties, and 2 accident reports were filed there, with 2 injury or illness cases.
The request: Watch Heidelberg Materials High Rock Quarry (MSHA mine ID 4501999) in Snohomish County, Washington: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 4501999
- Status
- Active since October 3, 1984
- Main commodity
- Crushed, broken traprock
- Mine type
- Surface
- County
- Snohomish County, Washington
- Nearest town
- Monroe
- Operator
- HM Pacific Northwest Inc.
- Parent company
- Heidelberg Materials AG
- Employees
- 32
- MSHA field office
- Kent WA Field Office
- Citations and orders since January 1, 2022
- 70
- Significant and substantial
- 13 (18.6%)
- Closure orders
- 1
- High negligence or reckless
- 3
- Proposed penalties
- $20,528
- Amount paid so far
- $19,890
- Inspections
- 19
- Inspector hours on site
- 290
- Citations per inspection
- 3.68 (all mines 2.30)
- Accident reports
- 2
- Injury and illness cases
- 2
- Fatalities
- 0
- Latest MSHA record
- October 22, 2026
- Citations issued to contractors here
- 2 ($1,968 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 | 9 | 1 | $2,461 | 0 |
| 2023 | 13 | 2 | $2,072 | 0 |
| 2024 | 15 | 4 | $4,491 | 0 |
| 2025 | 11 | 2 | $6,873 | 1 |
| 2026 | 22 | 4 | $4,631 | 1 |
Standards cited most at Heidelberg Materials High 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 56.11001 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 6 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14110 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.11002 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.11027 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.4402 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12002 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.3200 | Surface metal and nonmetal mines | 2 |
Injury and illness cases at Heidelberg Materials High Rock Quarry
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 1 |
| No lost time, or an occupational illness | 1 |
What the accident reports at Heidelberg Materials High Rock Quarry describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Machinery | 1 |
| Handling of materials | 1 |
Equipment named in accident reports at Heidelberg Materials High Rock Quarry
| Equipment | Reports |
|---|---|
| Hand tools (powered) | 1 |
Other open mines in Snohomish County, Washington
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Iron Mountain Quarry | Iron Mountain Quarry | Snohomish County, WA | Crushed, broken traprock | 18 | 69 |
| Granite Falls Quarry | HM Pacific Northwest Inc. | Snohomish County, WA | Construction sand and gravel | 18 | 47 |
| Mountain Loop Mine | Oma Construction Inc DBA Mountain Loop Mine | Snohomish County, WA | Construction sand and gravel | 3 | 43 |
| Menzel Lake Gravel | Lake Industries LLC | Snohomish County, WA | Construction sand and gravel | 4 | 35 |
| Cadman Longview (Gold Bar) Pit | HM Pacific Northwest Inc. | Snohomish County, WA | Construction sand and gravel | 4 | 30 |
| Green Crow Rock Products-Arlington Pit | Green Crow Rock Products | Snohomish County, WA | Construction sand and gravel | 6 | 28 |
| Smokey Point Pit | Smokey Point Concrete | Snohomish County, WA | Construction sand and gravel | 8 | 24 |
| Portable Crusher | A & E LLC | Snohomish County, WA | Crushed, broken traprock | 3 | 18 |
| Lenz Sand Hill Pit | Lenz Enterprises Inc | Snohomish County, WA | Construction sand and gravel | 2 | 14 |
| Cascade Quarry | HM Pacific Northwest Inc. | Snohomish County, WA | Crushed, broken stone | 2 | 13 |
| Getchell Pit | Miles Sand & Gravel Co Inc | Snohomish County, WA | Construction sand and gravel | 9 | 8 |
| Mine #5 | Orion Marine Contractors Inc. | Snohomish County, WA | Dimension stone | 2 | 7 |
| Lenz Enterprises Inc | Lenz Enterprises Inc | Snohomish County, WA | Construction sand and gravel | 2 | 2 |
| Skaglund Quarry | Skaglund Quarry | Snohomish County, WA | Construction sand and gravel | 4 | 1 |
| Reece Aggregates and Recycling | Reece Construction Company | Snohomish County, WA | Construction sand and gravel | 2 | 0 |
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.