What is frac sand? American Geosciences Institute

Frac sand is a type of sand with small, uniform particles. It is injected into the rock formation along with the water used to fracture the rock in the process known as hydraulic fracturing ("fracking"). The sand is used to prop open the fractures that are created. Because the particles are uniform, fluids like water, oil, and gas are able to flow through the spaces between the particles.

Iowa counties stick to home to win fights over frac sand mining - Investigate Midwest

Fracking spawns a sand mining boom

High-Quality 40/80 Mesh Sand

Sand Land: Fracking Industry Mining Iowa's Iconic Sand Bluffs in New Form of Mountaintop Removal - DeSmog

What environmental issues are associated with hydraulic fracturing?

As supply meets demand, Wisconsin's frac sand rush slows - Wisconsin Watch

With frac sand boom in full swing, study to guide mine reclamation, Environment

What is frac sand? American Geosciences Institute

From Farmland to Frac Sand

Frack Sand in Utah? - Utah Geological Survey

Technical Report Summary, Frac Sand Resources and Reserves Oakdale, Smart Sand, Inc., Business Contracts

Frac Sand Sources in the United States - Rock Products Magazine

Fracture (Frac) Sands in Kentucky, Kentucky Geological Survey, University of Kentucky

Frac Sand Archives - FracTracker Alliance

Frac sand boom creates thousands of jobs