Apparently asbestos has been used since at least 5000 years ago[0]. I wonder what prevented large scale extraction between then and the 19th century. [0] https

Apparently asbestos has been used since at least 5000 years ago[0]. I wonder what prevented large scale extraction between then and the 19th century. [0] https://books.google.com/books?id=eYHEEWhye94C&pg=PA449#v=onepage&q&f=false https://books.google.com/books?id=eYHEEWhye94C&pg=PA449#v=on...