1. T. Allen, Abutments, Retaining Walls, and Reinforced Slopes, in: Geotechnical Design Manual, 16th ed., Washington State Department of Transportation, 2022.
2. Impacts of Sand Mining on Ecosystem Structure, Process & Biodiversity;Koehnken;Rivers,2018
3. I. Ministry of Mines, Sand Mining Framework, 2018.
4. American Foundrymen’s Society (AFS), Foundry Sand Benificial Reuse Manual, Des Plaines, IL, 1996.
5. FHWA, Foundry sands facts for civil engineers, Federal Highway Adminstration, Washington. (2004).