This is not specific to the types mentioned, which I never worked on.
Many 1950-60's aircraft (military and civil) had asbestos 'bandages' fitted around hot pipes and used as insulation blankets in areas such as near exhausts. Most asbestos items would stay in original condition for (I assume) many years but occasionally they 'degraded' over time and were replaced based on perceived condition.
Unless they were an item of scheduled maintenance/replacement I wouldn't think most engineers would have much exposure to 'disturbed' asbestos and I also think quite low levels of dust may have been present only in long-term enclosed areas.
On the few occasions when I replaced asbestos bandages/blankets I had no additional protective equipment (in the 1980's RAF)
Very general perceptions of handling asbestos based on the aircraft I worked on - if it helps.