Evaluation of Safety Input-output Efficiency of Coal mine based on DEA Model

The fundamental improvement of the safety situation in mining of coalmine depends on the scientific decision making of safety input of the mining enterprise. For its objectivity, the data envelopment analysis (DEA) model is applied to evaluate the coalmine safety input-output efficiency comprehensively, and analyze the influence of the safety input factors on the safety output efficiency, such as the quantity, the structure, the time point, etc. The evaluation of DEA model can help the enterprise managers make a scientific decision and avoid the effect of subjective factors. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of China Academy of Safety Science and Technology, China University of Mining and Technology(Beijing), McGill University and University of Wollongong.