Analysis of Performance in Release of Non-metallic Minerals’ Pollutants in Iran by Non-parametric Directional Distance Output Function Model

In this study, the environmental aspects of nonmetallic mineral industries have been evaluated and the amount of pollutants and greenhouse gases from energy sources consumption has been calculated in all the subfields. The results demonstrate that the cement, lime and plaster having the utmost share of the spread of the carbon dioxide (CO2), involve the maximum share of the social costs. In this research, the technical performance of the mentioned industries has been calculated applying Slacks Based Measure (SBM) approach and the competent industries are specified. However the Directional Distance Output Function reveals that none of them are competent.