ISO 9001 Mondadori Electa S.p.A. is certified for the Quality Management System by Bureau Veritas Italia S.p.A., in compliance with UNI EN ISO 9001. This book respects the environment The paper used was produced using wood from forests managed to strict environmental standards; the companies involved guarantee sustainable production certified environmentally. Printed in December 2017 by L.E.G.O. S.p.A., Italy Project Coordination Salini Impregilo Corporate Identity and Communication Department Edited by Marina Itolli Texts by Stefano Cingolani and Marina Itolli Libri Illustrati Rizzoli © 2017 Mondadori Electa S.p.A., Milan All rights reserved Editor : Cristina Scalabrini Graphic Design and Layout : Picture Research Consultant : Giuseppe Contardi English Translation : Sylvia Adrian Notini All images are courtesy of the Salini Impregilo Archives The publisher wishes to thank Umberto Girola for having made available the photographs documenting the business activity of his grandfather, Umberto Girola. Cover Tarbela Hydroelectric Plant Pakistan / 1974 Farabola Back Cover Fadalto Hydroelectric Plant Italy / 1971 Guglielmo Chiolini