Officina dell’Ambiente S.p.A, located in the municipality of Lomello in Pavia province, performs the treatment and recovery process of special hazardous and non-hazardous wastes,mainly bottom ashes derived from municipal incineration plants to be re-used as secondary raw material for the production of cement and other building materials. Since November 2015 a new plant was put into operation in Conselice (Ravenna province). Thousands of tonnes of bottom ashes from incineration, instead of being disposed in landfill, are treated in a controlled manner through a treatment/recovery cycle which generates a secondary raw material, named Matrix®, as substitute of primary raw material for cement production and other building products. Today, Matrix® has become a family of products with different characteristics and ranging over almost all building sectors. At the moment, representatives of the Matrix® Family are: Matrix® Standard, with a particle size between 0 and 10 mm; AGMatrix®, with a particle size between 2 and 10 mm, this product is EC-labelled as aggregate for concrete in 2008; Sand Matrix®, a group of sands that can be produced in particle size of 0-2 mm, 0-4 mm and 2-4 mm. This EPD is available in English and Italian.