Northern Aggregates Inc. is locally owned and operated, serving the surrounding counties for 16 years. With three rock quarry locations we are able to produce aggregate based construction materials to serve your needs for any project. Our selection of trucks allows for us to offer delivery on any of our materials. No amount is too large or too small! Just give us a call and we will get you the material you need!!
- Northern Aggregates Inc
- P.O. Box 1566
500 Cropley
Willits, CA 95490
 707-459-3929
877-459-0615 Toll Free
 707-459-0644 Fax
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- Email Pat
 pat@mendocinorockproducts.com
- Harris Quarry
- MP 40.77 – located at the top of the Ridgewood Grade
Willits CA
707-459-0615
Hours of operation 7-4PM Monday – Friday
Coalmine Quarry - MP 21.5
Covelo CA
707-459-3929
Open by Appointment
Pieta Quarry- MP 6.74
Hopland CA
707-459-3929
Open by Appointment
Harris Quarry
- Base
- Rip Rap
- Cobbles
- Drain Rock
- Sand
- Pit Run
Pieta Quarry
- Base
- Rip Rap
- Cobbles
- Pit Run
Coalmine Quarry
- Base
- Rip Rap
- Cobbles
- Pit Run
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