Proppants are used in Oil and Gas recovery via fracking. “Props” are used to keep the holes and fractures open. These props must be strong and have good permeability. They also need needs to be pumpable great distances.

However, one of the most important features of a value proppant is uniform particle size. Currently, the industry uses a combination of various types of sand. This sand is course and does not allow for the oil to flow freely out of the fissures.

The SonoAsh process can create a engineered, uniform particle size, high value proppant that can be used by the oil and gas industry. The engineered coal ash is able to keep fissures open longer and has a higher compressive strength than traditional sand.