Cotton Mill something - what was this 12 year old doing for a living?

[nicdigby]

Hi, can you please help me out with the exact role that this 12-year-old boy had in the Dee cotton mill on the 1921 census in Lancashire?

"Spinning Room ?"

Thanks in advance

[casram]

Spinning room tuber

[nicdigby]

Thank you!

[hepburn]

The boys and girls working at the mill were given
the jobs which took advantage of their small size.
Reginald first worked as a ‘tuber’, filling canisters
with paper tubes that were then fixed on to the
machinery. Later once he had more experience,
he became a ‘piecer’. The large spinning
machines were 150 feet long and lined with
threads of cotton.....

https://www.rootschat.com/links/01sfi/