By the looks of it is the importing arm of Baird McNutt into India, they cannot call it Irish linen unless woven in Ireland. Anyway you can buy Barid McNutt linens direct from their retail arm here http://jhannaltd.com/
By custom a roll/piece or a bolt is 60yards, but ultimately its a variable figure, some mills weave rolls of 30m or 45m. The relevant figure for Pacific Blue is 100yds, as taken from their FAQ section: "Most items will not have a minimum unless otherwise noted. There is a $25 processing/cutting fee for orders that total under 100 yards. The fee is one time per invoice up to 5 different styles." Really? I'm quite surprised by that, never had any trouble with Acorn...
HFW now has a plethora of names including, Minnis, JG Hardy, J Martin & Sons, Hunt & Witherbotham etc. these lengths apparently come from the HFW Ltd. mill at Kirkheaton which shut in 2004 and was demolished in 2008: http://www.examiner.co.uk/news/west-yorkshire-news/kirkheaton-mill-memories-captured-during-5025516 Afaik, HFW are solely merchants now and have cloth woven for them.
For some of the real cloth hounds out there, theres a fella on ebay who claims to have sample lengths taken from the Huddersfield Fine Worsteds before its demolition, may be of interest to collectors here http://www.ebay.co.uk/sch/Fabric-/28162/m.html?item=371306749412&hash=item56739b5de4&pt=LH_DefaultDomain_3&_ssn=pinksweep