Sandro Demelas is a mining engineer with 20+ years experience in the construction and mining industry. With passion and enthusiasm, versatility and eclecticism, he served as a designer, construction manager and consultant in the design and construction of major civil projects and in the technical management of quarries, in the United States, Italy, Sierra Leone and UK.2015-present - Nova Consulting - New York, construction manager and designer in the wastewater treatment plant industry, hydraulic works, electrical substations, roads, bridges.2012–2015, Consultant, freelance - Greentech srl, Energia Verde srl, Energia Alternativa srl, Fabiani spa and others- Italy, construction management and design of civil structures, railways, geotechnical works, wind farms.2010-2011, Responsabile dell'ufficio progettazione - Tecnolav srl, Italy - Design of civil works and infrastructure.2007-2010, Resident Engineer - Studio Ing. G. Pietrangeli srl, construction management and design for the Bumbuna Dam and hydroelectric plant, Sierra Leone.2004-2007, Direttore responsabile - Estrazione Graniti srl - Ovodda, granite quarry operation.2004-2006, Direttore tecnico - F. Zanolla Costruzioni Ferroviarie srl - Cagliari, design, construction and survey for the Cagliari Light Metro, construction of railways.2003-2004, Direttore tecnico - Zamburru Costruzioni s.r.l. - Ittiri, construction and survey of roads and utilities.2001-2002, Surveyor - Murphy’s and Sons, London, UK, tunnelling.2000, Università di Cagliari, MS in Environmental Engineering, georesources.