Process characteristics. a) The full-scale process samples were taken from the feeding material, the feeding and unloading ends of the drum and from the tunnel. b) Pilot scale process samples were taken from the drum feeding and the unloading end. The polygons indicate the sites of sampling.
Partanen et al. BMC Microbiology 2010 10:94 doi:10.1186/1471-2180-10-94