Bill, I too was fortunate enough to spend a week with Fay at a workshop at Duckspool, whatever became of those by the way anyone, as far as I can recall she pretty much used whatever got the job done.
Her latter colour work of closeups of vegetation were hand held 35mm, I'm pretty sure.
For many years Peter Cattrell was her B&W printer. He is a landscape photographer here in the UK, he is a contemporary of Micheal Kenna's, he teaches at the LCP among other gigs and has done a lot of work on the first world war battle fields particularly in france.
Mind you if you got off on the wrong foot with her you could be in for a rocky workshop as one guy found out, but that's a nother story
her work is fab, both B&W and Colour