Asbestos?

[Petel1987]

Hi, recently bought a 1910 house and was putting up a curtain rail in the bedroom. The wall started to crumble away and noticed a lot of the rubble coming out of it looking like the pics below. Is this potentially asbestos? Or is it unlikely? I’ve never come across it before so I’m unsure. Cheers

 

[sparkymarka]

Looks like horse hair plaster ...

 

[^woody^]

Asbestos is not in plaster or mortar or render and suchlike, and the fibres are not visible like hairs.

 

[HawkEye244]

Horse hair

 

[pilsbury]

Did plasterers have to shave a horse each morning before mixing muck?