It was cyclists, and not motorists, who first pushed for high-quality, dust-free road surfaces (dust was a major irritant at the time, believed to be a cause of disease, especially as so much of it was powdered horse shit).
Good-quality, dust-free potatoes were collected from local market.
To improve mine air quality and dust collection performance, an enclosed cyclone passageway (ECP) dust-collecting fan has been designed and developed.
This research evaluated the quality of dust dispersion in the Siwek 20-L chamber using Pittsburgh coal, Gilsonite, and purple K dusts.
Table 2 shows the average RPDs between concentrations of PAHs in matched pairs of various quality control dust samples.
Environmental data gathered during the home visit included measures of indoor air quality and dust samples from the bedroom and living room.
The observed interbatch variability in levels of low-molecular-weight PAHs measured in replicate quality control dust samples may have resulted from the sporadic contamination of samples via laboratory air.
In the report, underfeeding was given the same HC score as, for example, high humidity, poor air quality (ammonia, dust) and continuous restocking (no all-in, all-out), but it received a lower HC score than, for example, inadequate ventilation, poor air quality (H2S), insufficient space, insufficient light, social isolation and mixing of calves from different sources.
