Help in dating please Horse Hair factory in rural Suffolk

[OakleyGenealogy]

Here is a pdf that explains the Horsehair process

Horse Hair Processing

With regards to the dating what leeway is there with the dates?

The photo had originally been annotated in 1978 by a man who had named all of them from either his own memory or his fathers.

If these names are right then the age of the photos must surely be older than 1908 to early 1920's.

The lady in the first picture on the back row wearing black was born in 1865.
This is the same lady on the back row in the middle holding the shears on the second picture.
The lady in the second picture on the front row, second in from the right was born in 1893.
The lady in the second picture on the front row, far right was born in 1890.
The lady in the second picture on the front row, far left was born in 1883.

Are the names wrong, the dates wrong or am I just thinking people look older than they are?

[Handypandy]

In addition to the information in the link, horse hair was also used by plasterers in the building trade before gypsum plasterboards were more commonly available, to reinforce the plaster on lath walls. Anyone like me who has had the pleasure of removing it will tell you what a lovely job that is 

[Wiggy]

I agree with Jim and Carol!    What I was trying to say really!     Just I couldn't be so specific as I am no expert.

It is the fashions, the hair styles, the length of skirts, the hats etc which give the periods away.

If the photos weren't annotated until 1978, maybe the person doing the annotating got it a bit wrong.  It has been done before?          

Wiggy