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TermsPrivacyEN / USD
All QuarriesCAEl Cajon Quarry
Active

EL CAJON QUARRY

Hwy 8 east to 2nd St. South on 2nd to Jamacha. Continue South on Jamacha to Willow Glen. Left (east) on Willow Glen, continue 2 1/2 miles to plant entrance on left., San Diego County, CA
Get DirectionsClaim This Listing
MSHA ID0400133
TYPESurface
MATERIALCrushed, Broken Granite
EMPLOYEES5

MATERIALS PRODUCED

Crushed, Broken Granite

COMPANY INFORMATION

Operator

Robertson's Ready Mix Ltd

Parent Company

RRM Development Corporation; Mitsubishi Corp

Company Type

Partnership

DIRECTIONS

110

CONTACT

Contact information not available for unclaimed listings.

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View on OpenStreetMap

32.764722, -116.890000

Data Source

Mine Safety and Health Administration (MSHA)

Last updated: 1/30/2026

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