For further information regarding the handling of such materials, you can go to the EPA website for more information or better yet hire a contractor who specializes in ceiling removal and renovation to minimize the hazards of handling the hazardous substance. One can do the job by himself but the time and cost of doing so would be quite steep due to all the protective clothing and equipment that is needed. It is also better to get it done on a one sweep renovation, taking them all out from all the ceilings for the risks increase repetitive jobs wasting time and effort and of course money in paying for jobs that could have been done in a single swoop.