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Background: In working environment of waste treatment facilities, employees are exposed to high concentrations of airborne microorganisms. Fungi constitute an essential part of them. This study aims at evaluating the diurnal variation in concentrations and species composition of the fungal contamination in 2 plastic waste sorting facilities in different seasons. Material and Methods: Air samples from the 2 sorting facilities were collected through the membrane filters method on 4 different types of cultivation media. Isolated fungi were classified to genera or species by using a light microscopy. Results: Overall, the highest concentrations of airborne fungi were recorded in summer (9.1×10 3 -9.0×10 5 colony-forming units (CFU)/m

Both methods showed comparable sensitivity to the fluctuations of the concentrations of airborne fungi during the work shifts. The SAS method is adequate for a fast indicative determination of concentration of airborne fungi. The MF method is suitable for thorough assessment of working environment contamination by airborne fungi. Therefore we recommend the MF method for the implementation of a uniform standard methodology of airborne fungi sampling in working environments of waste treatment facilities.

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This article pays particular attention to the evaluation of costs associated with the rehabilitation of the Central Mine Waste Bank of the Jan Šverma Mine in individual years. It mentions briefly the present state of the Central Mine Waste Bank and describes in short the works performed so far on the mine waste bank. Furthermore, the article describes specific types of rehabilitation; the description of partial operations is provided as well. The above-mentioned costs are quantified in a tabular summary for the years 2008 - 2011. These works were ordered by the Ministry of Industry and Trade through the state enterprise Fuel Combine Ústí nad Labem, which had absorbed the former state enterprise East Bohemian Coal Mines in Trutnov [1]

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