Johns-Manville and other early asbestos cement manufacturers, including Baltimore Roofing & Asbestos Manufacturing Company, Inc., Flintkote Company, Keasbey Mattison Company, Philip Carey Manufacturing Company, focused on the production a wide spectrum of asbestos cement products, pretty much all throughout the first half of the 19th century.
In 1907, the asbestos industry was blessed with another revolutionary invention. The Austrian engineer Ludwid Hatschek found a way to manufacture asbesto...