When removing asbestos cement shingles, wear a respirator
MassDEP recommends that, at a minimum, anyone involved in removing asbestos cement shingles should wear a respirator and protective clothing.
Respirators should be equipped with high efficiency particulate air (HEPA) filters and should be "fit tested" to your face. You should have training in the proper use of the respirator before trying to wear it.
You should consult a physician before wearing a respirator, since a respirator may not be suitable for use if you have certain health conditions or if it will prevent you from functioning normally.
Courtesy of The State of Massachusetts
Learn about how asbestos cement shingles can be tested and analyzed