Information about the nature of the propant used in hydraulic fracturing. Proppants are classified as sand, ceramic and resin coated sand. Resin coated sand is widely used to improve packing and holds the proppant to its place without flowing back to well-bore. Raw sand is the most widely used proppant product in the global market on account of its easy availability and low cost. Raw sand is used typically in most pressure conditions in a well-bore but it is difficult to use in well-bores with high closure pressures.
- - 1208 - [NA] - about money, Wendy Lyons Sunshine - "What is Fracking Sand?"
- "The term "fracking sand" refers to sand and similar small materials that serve as “proppants” -- which are blasted under pressure into a shale gas well along with large quantities of water and industrial fluids to stimulate gas production. Proppants are used to “prop” open the underground cracks from which natural gas is harvested during hydraulic fracturing."
- - 1528 -  - National Center for Freight & Infrastructure Research & Education - University of Wisconsin–Madison, Maria V. Hart, Teresa Adams, and Andrew Schwartz - "Transportation Impacts of Frac Sand Mining in the MAFC Region: Chippewa County Case Study"
- "The boom in oil and gas production using hydraulic fracturing (fracking) technology to extract oil and gas from shale has created thriving industries all along its supply chain. The increased production of the supplies needed for drilling—sand, water, chemicals, pipe, and rigs—all with different transportation characteristics, have also strained the transportation system at the source of production, processing, and distribution.
...Road damage over local roads is a concern for many communities. County governments have used a number of mechanisms to recover the costs of road damage both for drilling areas and sand mining areas."