Steel Truss Roof Construction - South West Scotland

[KaiSkeoch]

Has anyone come across something similar to the roof construction in the photos attached? Trusses are steel as pictured, however not sure what is between purlins.
Building believed to be constructed from 1960’s onwards and situated in the South-West of Scotland. These are NOT RAAC Panels.

 

[human909]

My first thought was asbestos. Aka asbestos fibre cement. Though I really don't know much about identifying it.

A quick google reveals this which looks somewhat similar.

https://welshbuilds.co.uk/2018/11/05/i-have-an-asbestos-cement-garage-roof-what-shall-i-do/