Mt. Gaines Rock

05/19/2026

Here is the 3/4 inch crushed rock you all have been waiting for!!! White in texture with blue tones. Made from some of the hardest rock in Mariposa county! Great for driveways, paths, roadways and many other uses. Our rock is also on display at the fairgrounds so call us if you’d like to order some today!

04/17/2026

Proud of the work these men have been doing on our JAW CRUSHER which will allow us to crush hard rock boulders 36 inches in diameter down to various sizes of usable rock. Ultimately this process will result in a Class A 3/4 inch CRUSHED ROCK white in color with some blue in it. Calling all contractors, ranchers, road departments, etc. We will have the best hard rock available in Mariposa County or the valley for that matter. The granite in Mt Gaines rock is superior to the river rock you find in the valley. So stay tuned!!! We will make an announcement when this high quality gravel is available in the near future!

03/31/2026

We love you Debby

02/02/2026

Good afternoon everyone!
Im happily sharing our journey constructing our Jaw crusher here at Mt Gaines
Can’t wait to see what it brings us.
Thank you for watching!

12/02/2025

Go to our new website to see our products at unbeatable prices: https://www.mountgainesrock.com/

11/14/2025

Mt. Gaines Rock offers wholesale pricing locally at unbeatable rates. Road base is $40 per cubic yard and 3/4 crushed rock is $45 per cubic yard. We also have other products available. Materials can be picked up at 7176 Mt. Gaines Rd between 7am and 2pm. Please call 209-376-2343 for more information. Compare prices and discover why we're the best value!

11/11/2025

In appreciation of the service of our Veterans we at Mt. Gaines Rock are offering the following reduced prices thru Friday (11/14/25) for Veterans and those still serving in any armed forces:

Road base: $25 cubic yard
3/4 crushed: $30 cubic yard

Where, when and how?

Drive to: 7176 Mt. Gaines Rd, Hornitos, California, 95338 - Drive to office - Use radio to call for service.
Pick up available between 7am to 2pm.

Thank you so much for your service!

11/09/2025

11/07/2025

ISO: Mt. Gaines Rock is looking for independent contractors with a dump haul trailer in the Mariposa area for smaller amounts of gravel, rock, sand, and dirt. Must be able to handle at least 3 cubic yards (approx 4.5 tons). We sell the product and you name your price for delivery. Please call our office and leave a message at 209-376-2343