The following selection of documents, presentations and white papers helps illustrate and support the SonoAsh opportunity for utilities and their local communities, ready-mix producers, the US Department of Energy and Governments at all levels. 

Lucinda Tolhurst - 2015 World of Coal Ash Conference 

Rare Earth Elements in Coal Deposits

Life Cycle Assessment of Metals

Rare Earth Beneficiation and Hydrometallurgical Processing