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GRIMES ROCK A CALPORTLAND COMPANY

I-15 North to I-210 West to I-5 North to hwy 126 West follow to hwy 23 in the town of Fillmore. Turn left and follow approx. 5 miles to mine., Ventura County, CA
MSHA ID0405432
TYPESurface
MATERIALConstruction Sand and Gravel
EMPLOYEES14

MATERIALS PRODUCED

Construction Sand and Gravel

COMPANY INFORMATION

Operator

CalPortland

Parent Company

Taiheiyo Cement Corp

Company Type

Corporation

DIRECTIONS

210

CONTACT

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34.334722, -118.909444

Data Source

Mine Safety and Health Administration (MSHA)

Last updated: 1/30/2026