Langley Hill Quarry — Quarry and material-source record

Primary commodity in source: Crushed, Broken Traprock; Operator in source: Langley Hill Quarry. Recorded location: San Mateo, CA. Review the recorded source identity, location and material information together. Confirm current eligibility and operating details with the original publisher.

StateCA

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

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

Reported record details

Fields retain their source labels and context. Read the original source for full details, qualifications and current status.

Source data row 5641

MSHA mine-register snapshot. Active means the status reported in this download, not a current operating guarantee or DOT materials approval. Coordinates are reported by the source and may represent portable operations.

MSHA mine ID
0400170
Mine name in source
Langley Hill Quarry
Mine type in source
Surface
Status in source
Active
Status effective date in source
01/23/1989
Operator in source
Langley Hill Quarry
State
CA
County
San Mateo
Nearest town in source
WOODSIDE
Primary commodity code
142904
Primary commodity in source
Crushed, Broken Traprock
Portable operation flag (Y/N)
N
Reported latitude
37.336111
Reported longitude
-122.247778

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