Humans, Middle Aged, Male, Polycyclic Aromatic Hydrocarbons - adverse effects, Hydrocarbons - adverse effects, Air Pollutants, Occupational - analysis, Adult, DNA Damage - drug effects, Lymphocytes - metabolism, Cell Line, Salmonella typhimurium - genetics, Micronucleus Tests - methods, Occupational Exposure - adverse effects, Plastics - adverse effects, Hyd...