1. Clay soils, composed of very fine particles, have a much higher affinity for water than silty soils. 2. In all these ways the surface has been broken into fine particles. 3. The aliquots are withdrawn from specified depths at the time intervals shown for a full analysis of the fine particle content. 4. Among those most sensitive to fine particle pollution are infants and children, the elderly and individuals with pre-existing heart and lung conditions. 5. And an important component of that process is avoiding the introduction of unnecessary new concentrations of contaminants, and especially the fine particles contained in diesel exhausts. 6. And rain washes pollution from fine particles out of the air. 7. Berylliosis is a lung disease caused by breathing fine particles of the metallic element beryllium. 8. But if some people have access to very fine particles, it means that they in theory can spread the germs as a mist covering a much greater distance. 9. But the EPA has not yet embraced extremely tight limits on fine particle emissions, a solution advocated by environmentalists. 10. Currently, only a handful of monitors measure fine particle levels, forcing analysts to extrapolate from the level of larger particles. |