Hidden Valley — Quarry and material-source record

Primary commodity in source: Construction Sand and Gravel; Operator in source: Colaska Inc. dba Secon. Recorded location: Juneau, AK. Review the recorded source identity, location and material information together. Confirm current eligibility and operating details with the original publisher.

StateAK

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

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Source data row 91172

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: 5001861
Mine name in source: Hidden Valley
Mine type in source: Surface
Status in source: Intermittent
Status effective date in source: 07/10/2020
Operator in source: Colaska Inc. dba Secon
State: AK
County: Juneau
Nearest town in source: Juneau
Primary commodity code: 144200
Primary commodity in source: Construction Sand and Gravel
Portable operation flag (Y/N): Y
Reported latitude: 58.370833
Reported longitude: -134.473333

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—	Source data row 91172 · 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 91172

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