Welcome, Leigh!!
Yes...the above 2 posts is a great place to start. My great-grandfather (John Robert Halstead) worked there for decades in the early 20th century as a bookkeeper. My grandfather (James Halstead), his brother (Edmund Halstead), and his sister (Lizzie Mason) worked as weavers. Lizzie was married to Willie Mason, who also worked at Harle Syke Mill as a tattler. Willie was a relative of Dodie's, but I haven't got that far yet in my tree!
I visited the mill many times as a child going to meet my grandfather when I came for a visit from Manchester, where I lived. I used to walk to his 6 looms in the middle of this huge shed, being very brave indeed, in between the loud, clattering looms.I believed I would surprise him but my presence was always known to him....messages preceding my determined progress...all weavers sending mime messages along so that my presence was heralded long before I reached him! The weavers communicated by exaggerated silent talk..so that the words were lip-read from person to person. It was called mee-mawing...because that's what it always looked like everyone was saying!
Leigh...what is it you are looking for? Or whom? We have some real experts on this website(not me!)...you are going to get a lot of help, if you want it.