CONTENTS. Special Section "Naturally occurring asbestos: state of the art and strategies for investigation and management". Carmine Apollaro , Ilaria Fuoco , Giovanni Vespasiano, Rosanna De Rosa, Franco Cofone, Domenico Miriello, Andrea Bloise, Geochemical and mineralogical characterization of tremolite asbestos contained in the Gimigliano-Mount Reventino Unit (Calabria, south Italy). Antonella Campopiano, Maria Rosaria Bruno, Angelo Olori, Federica Angelosanto, Antonino Iannò, Stefano Casciardi, Alessandra SpadaforA, Fibrous antigorite in Mount Reventino area of central Calabria. Chiara Benedetta Cannata, Andrea Bloise, Rosanna De Rosa, Outdoor fibres air pollution monitoring in the Crotone area (Southern Italy). Daniele Moro, Gianfranco Ulian And Giovanni Valdrè, Correction factors for the effect of shape and thickness of SEM-EDS microanalysis of asbestos bundles and fibres by Monte Carlo simulation. Rosalda Punturo, Claudia Ricchiuti, Kurt Mengel, Carmine Apollaro, Rosanna De Rosa, Andrea Bloise, Serpentinite-derived soils in southern Italy: potential for hazardous exposure. Girolamo Belardi, Gianluca Vignaroli, Francesca Trapasso, Alessandro Pacella, Daniele Passeri, Detecting asbestos fibres and cleavage fragments produced after mechanical tests on ophiolite rocks: clues for the asbestos hazard evaluation. Rosalda Punturo, Rosolino Cirrincione, Giovanna Pappalardo , Simone Mineo, Eugenio Fazio , Andrea Bloise, Preliminary laboratory characterization of serpentinite rocks from Calabria (southern Italy) employed as stone material. MARIA RITA PINIZZOTTO, Carmelo Cantaro, Maria Caruso, Luciano Chiarenza, Carmelo Petralia, Sebastiano Turrisi, Antonio Brancato, Environmental monitoring of airborne fluoro-edenite fibrous amphibole in Biancavilla (Sicily, Italy): a nine-years survey. Daniela Bellomo , Carmelo Gargano , Annalisa Guercio , Rosalda Punturo, Bianca Rimoldi, Workers' risks in asbestos contaminated natural sites