In the article, “Analysis of Amphibole Asbestos in Chrysotile-Containing Ores and a Manufactured Asbestos Product” by J.R. Millette, A. Harmon, P. Few, W.L. Turner Jr., and W.R. Boltin (The Microscope Volume 57, First Quarter, pp. 19-22, 2009; DOI forthcoming) contains the following two errors: • Page 19, column 2: In the Introduction section, change “sepentinite” to “serpentinite.”• Page 20, column 2: In the Analysis Methods section, change “0.5 mm” to “0.5 μm.”