Economy of heat in two presses alternately heated and cooled

The author has investigated the sociological and professional characteristics of workers in six (from a total of 14) work organizations in Slavonia and Baranja, which make about 75% capacity of complete sawmilling in this region. He examined professional qualifications of workers, dispersion of workers' residential places, intensity of labour turnover and correlation between the percentage of workers living in villages and the percentage of workers on sick-leave up to 30 days. It has been concluded that all these factors have a negatiive influence on efficiency of work.