Mt. Gaines Rock

10/10/2026

Built to hold the line. 💪

Our 4" minus riprap is tough, locally sourced Mariposa County rock that stands up to water and weather. Great for:

✔️ Erosion control
✔️ Ditches and culverts
✔️ Creek banks and drainage channels
✔️ Slope and embankment stabilization

📏 Size: 4" minus
💲 Residential rate: $40/yard (under 20 yards)
💲 Commercial rate: $20/yard (20 yards or more)

Protect your property before the next storm rolls in. 🌧️ Large or small quantities available. 📩 Message us to order today!

10/09/2026

Need gravel for your next project? Mt Gaines Rock has you covered! 🚛

Our 3/4" gravel is locally sourced right here in Mariposa County and perfect for:

✔️ Driveways
✔️ Building projects
✔️ Landscaping
✔️ Drainage and road base

📏 Size: 3/4"
💲 Residential rate: $40/yard (under 20 yards)
💲 Commercial rate: $20/yard (20 yards or more)

Large or small quantities, no job too big or too small. 📩 Message us to order today!

08/27/2026

The road to the “beach” sand is ready. Please contact us for all your sand needs!

08/25/2026

A Friend of Mt Gaines was gracious enough to fly over the plant and send us this image! Pretty cool how it shows all the rock and sand we are processing and selling.

08/19/2026

Need Sand? Check out our beautiful white sand available for purchase now. $20 per ton for 1 dumptruck load or more. $40 per ton for small batches.

08/12/2026

As another sun sets at Mt Gaines, we would like to thank our Partners, our Community, our Customers, and most important God for all His blessings.

08/04/2026

08/04/2026

Another satisfied Mt Gaines Rock customer! Our road base product is a great option for dirt roads that lack a solid foundation. The fines and 3/4 inch gravel bind together to create an impervious base. This option is great for people who do not want to have major issues with their roads or driveways in the winter. The base product also prevents the “spinning tire” effect because the aggregate sets up quickly to avoid loose gravel. To keep dust down, many customer also overlay their base with our 3/4 inch gravel.

07/27/2026

Come and get it!!! We are now selling out of this premium crushed 3/4 inch rock as fast as we can make it! If you are looking to make your property shine you can’t beat this beautiful blue/while rock that is great for overlaying dull brown rock or even raw dirt. Mt Gaines rock is crushed so the rocks jagged edges naturally fit together, creating a hard surface that will serve you and your property well for years to come!

07/04/2026

Happy 250th America!!! Mt Gaines Rock is proud to sponsor Mariposa County’s historic 4th of July celebration today, the 250th year of freedom for our country!!!! Here’s a video to show what freedom makes possible.