Asbestos and Antique Radios
Caution! Some radios use sheets of friable asbestos under or above the chassis. Breathing asbestos fibers can cause various lung diseases such as asbestosis and lung cancer. Never use compressed air near asbestos. Compressed air will cause the asbestos to become airborne. If your radio contains asbestos, consult OSHA guidelines for safe removal.
More information on asbestos abatement in general from the Mesothelioma Center here.