The magazine Horizonte Minero, in its 112 edition, published a market study conducted by Digiscend, an analysis of the market share of Peruvian and international companies that provided engineering services covering the areas of Engineering, Environment and Geotechnics in the period 2011-2015. The criterion for determining market participation considers the number of projects executed as a primary variable, where Anddes leads the ranking with a participation of 23.5%. To view the full study, please enter the following link: https://digiscend.com/p/ranking-de-expertise-empresas-de-ingenieria/ or review the journal Horizon Minero 112, page 38-40.