The aim of our study is to determine and minimise the fungus related health problems for mine workers by determining the potential pathogenic microfungi in the outdoor and indoor air of an underground coal minery. For this reason air samples were taken from 42 sampling sites of 6 stations including main carriage canals, carriage canals and desandre canals, mechanised areas in which the production is held by machinery, manual areas in which the production is held by mine workers, the ceiling areas and areas that are outside of the mine and Merck Mas 100 Eco Air Sampler, with an airflow rate of 100 L/min, was used. A total of 11959 colonies were detected and 10 genera and 25 different species were isolated. The results were given in cfu/m3. The genera identified were Aspergillus, Alternaria, Amorphotheca, Cladosporium, Fusarium, Mucor, Penicillium, Rhizopus, Scopulariopsis, Trichoderma and mycelia sterilia