[Dermal exposure to ethylenediamine in the petrochemical industry].

During an examination of 47 workers engaged in ethylenediamine production subjective complaints of the skin were registered in 39% of them. Professional contact allergic dermatitis (26%) prevail over the contact irritative (6.5%) and lead very often to a change of employment for the operators.

[Basic work environment factors at the Kremikovtsi Coke Chemical Plant].

The investigations, carried out by the institute of Hygiene and Occupational Diseases, for the assessment of toxic-chemical and physical factors of the working environment in the metallurgical-chemical plant showed a high degree of air pollution with dust and high number of toxic substances, many of them manifestating an additive effect or effect of synergism. At certain working places the physical factors have manifested deleterious effect. On the base of the investigations carried out, recommendations are proposed for further investigations on proper assessment of the occupational risk and improvement of labour conditions.