Figure 2

Particle size distribution contour plots of the elongated mineral particles within each amphibole sample. Each dot represents the respective length (y-axis) and width (x-axis) dimensions for each EMP having an aspect ratio ≥ 3:1 counted in each amphibole sample. Panel A shows data from LA2000; Panel B shows data from LA2007; Panel C shows data from RTI Amosite; Panel D shows data from UICC Amosite. Total number of EMP equals 450 (LA2000), 250 (LA2007), 292 (RTI amosite), 178 (UICC amosite). Only those particles with L ≤ 30 μm and W ≤ 1.0 μm are presented. Colored contour lines represent the L and W dimensions that correspond with a specific percentile cutoff of particle size distribution ranging from 95^th percentile (dark red) to 1^st percentile (dark blue). Percentiles are indicative of the percentage of EMP that fall to the right of the contour line.