MAP20071029591 Hery, Michel Exposure of contractors to chemical pollutants during the maintenance shut-down of a chemical plant / Michel Hery, François Diebold, and Gérard Hecht Sumario: The aim of this study is to precisely define the typology of exposure of contracting firms employees to chemical pollutants in the chemical industry En: Risk analysis. - New York and London. - Vol. 16, nº 5, 1996 ; p. 645-655 1. Higiene industrial . 2. Contaminantes químicos . 3. Plantas químicas . 4. Enfermedades profesionales . 5. Contratistas . 6. Análisis de riesgos . 7. Métodos de análisis . I. Diebold, François . II. Hecht, Gérard . III. Título. IV. Título: Risk analysis.