PLANT A — Quarry and material-source record

Primary commodity in source: Crushed, Broken Traprock; Operator in source: Rock Services Inc. Recorded location: Cowlitz, WA. Review the recorded source identity, location and material information together. Confirm current eligibility and operating details with the original publisher.

StateWA

Source-backed record from MSHA surface aggregate mine register. Browse the labeled observations and original source below.

Source collection: MSHA surface aggregate mine register
Source checked: 2026-10-15

Reported record details

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Source data row 79784

MSHA mine-register snapshot: INTERMITTENT operation in the source. This is not a claim of continuous production, current availability or DOT materials approval. Coordinates are reported by the source and may represent portable operations.

MSHA mine ID: 4503358
Mine name in source: PLANT A
Mine type in source: Surface
Status in source: Intermittent
Status effective date in source: 05/13/2024
Operator in source: Rock Services Inc
State: WA
County: Cowlitz
Nearest town in source: Castle Rock
Primary commodity code: 142904
Primary commodity in source: Crushed, Broken Traprock
Portable operation flag (Y/N): Y
Reported latitude: 46.246111
Reported longitude: -122.983333

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—	Source data row 79784 · MSHA mine-register snapshot: INTERMITTENT operation in the source. This is not a claim of continuous production, current availability or DOT materials approval. Coordinates are reported by the source and may represent portable operations.

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Source data row 79784

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