California Aggregate & Mining Machinery was started in 1990 by Dennis Madigan. It is our goal to offer quality used machinery at a reasonable cost. Our machinery listings include all types of mining and sand and gravel process plants. We have various surplus machines available which include crushers, grinding machines, feeders, material handling conveyors, silos, complete plants, and pumps. If we do not have your needed machine in our inventory, we can locate it for you. We also buy used process machinery that is suitable for reconditioning.