Coal TarCreosoteCoalCoal MiningTarsLarreaKeratolytic AgentsPolycyclic CompoundsAntidiarrhealsPolycyclic Hydrocarbons, AromaticPrintingAcenaphthenesLoperamideGuaiacolPsoriasisCoal AshWoodBenzo(a)pyrenePneumoconiosisDermatologic AgentsOccupational ExposureEczemaCresolsDNA AdductsUltraviolet TherapySemiconductorsAluminum