TD,
I would have to pull the book out to give an exact quote, but he said something to the effect of saying dozers have possibilities to expand golf design thinking in new way. There are a few dozers in pictures in the book, and at one point, he writes that he has seen all sorts of construction methods, from horse and scoop, to draglines, to dozers, to dynamite. Of course, that could have been editor Ron Whitten speaking in his voice, I am not sure.
I also recall a pic in there of Beverly, which struck me as more modern, sweeping slopes, etc. than most of what Ross did on the east coast, and thought those pics looked like dozer work, so maybe there was a difference between him and his western associates working under his name?