1945: Selling Insulation Likely Contaminated By Asbestos

This 1945 advertisement from Enger Lumber Co. is saddening.

Zonolite was a commercial name for vermiculite, which was used as an insulator. Unfortunately, Zonolite was particularly likely to be contaminated with asbestos. I’m fairly sure no one here was aware of that at the time, and they didn’t even start phasing out asbestos until the 1970s, though apparently the industry was aware it was dangerous in the 1930s.

What does "No priorities needed" mean?

Next post at 6 p.m.