Explore the complex regulatory issues surrounding amphibole asbestos in this 33-minute talk by Ann Wylie from the University of Maryland. Delve into the history and current status of asbestos regulation, examining what defines an amphibole as "asbestos" and the factors contributing to asbestos-related diseases. Learn about fiber growth habits, width variations, and regulatory criteria such as aspect ratio. Investigate the Asbestos Act of 2019, the concept of Elongated Mineral Particles, and the challenges in determining asbestos potency. Gain insights into dimensional parameters, correlation coefficients, and predicted values while acknowledging the gaps in current knowledge about asbestos-related health impacts.