Ispectrum Magazine Ispectrum Magazine #15 | Page 24
Reversing Fly ash by Dimitre Assenov Groundbreaking technology for converting fly ash and liquid waste from coal-fired power plants into artificial aggregates for concrete, asphalt and road base. 23
Ispectrum Magazine Ispectrum Magazine #15 | Page 23
Ispectrum Magazine Ispectrum Magazine #15 | Page 25