Quarrying industry is a significant business sector; it presents a job opportunity also, a significant source of income through taxes that contributes to local economic development; but it generates negative effects on the environment. The awareness of the protection of the environment requires the reconciliation between the imperatives of preserving the environment and those of sustainable socio-economic development. In this context, this paper presents a study of this activity taking into consideration several heterogeneous variables measured on the study area (province of Settat, Morocco). Which is located in the center of Morocco on the phosphate plateau which is characterized by a geological diversity conducive to the quarrying activity with these 111 quarries which are exploited there it presents a very adequate frame to the study. This is followed by a post-observational analysis of multivariate statistical analysis, the purpose of which is to reduce a large set of variables to a small set that still contains most of the information in the large set.