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Not interested specifically in Colmonoy; rather, I am trying to figure out what potential asbestos exposures existed historically in the annealing process. I really value your input - thank you so much!

What time period were these practices (asbestos) customary? When were they phased out?

Thanks so much! >The parts were always cooled to RT Can you estimate how much time this might take for a pump plunger? >Cooled in a closed furnace Do you recall if these furnaces were lined with an asbestos refractory material? Or if they were perhaps made of an asbestos-cement mixture...

Hello, I am looking into the industrial process associated with annealing pump plungers. I would like to know how these materials were cooled -- quickly or slowly? In a vat of flame retardants (like asbestos)? Or a "tundle" (?) in which they might cool to room temperature? Or in a "tundle"...