the study of bacteria and microorganisms with the impacter Six stage viable such as education in factories that produce animal feed, according to the manner in which the process of compressed tablets and found bacteria in the 18 and 113± ±18 89 CFU/m 3 and the process of bacteria and found that grindingCFU/m 3 and 124 CFU ± 12/M3), respectively (Kim et al,2009.) for the amount of bacteria found metro station, and a 5 - 1530 CFU/m 3 and 49 - 1,906 CFU/m 3 (Wang et al, 2010).
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