"having proceeded" is grammatically correct and can be used in written English.
It is a verb in the Past Participle form, and is used when talking about having finished or completed an action in the past. Example: Having proceeded with the experiment, the scientists were able to identify a new species of plant.
But all of us in science are collectively responsible for having proceeded as if these facts aren't our problem.
"Having proceeded with marginal changes, something more dramatic is in order," Kenneth Rogoff, the chief economist of the International Monetary Fund, said on a visit here today.
A fictional counterpart to the recently published memoir of Sue Klebold, mother of one of the Columbine killers, Eva's guilt is really a kind of regret for having proceeded with a pregnancy she never wanted.
Having seen reproductions of a grisly group of black-and-white photographs by Schwarzkogler, in which a man appears to have sliced one or more pieces of his bandaged genitals, Hughes with characteristic flair dubbed Schwarzkogler "the Vincent Van Gogh of body art," for having "proceeded, inch by inch, to amputate his own penis, while a photographer recorded the act as an art event".
Having proceeded in lock step to adopt the current method, which was chosen in part because it differed from the one used on animals and masked the involuntary movements associated with death, state governments would prefer that someone else, possibly the courts, change the formula first.
"I can absolutely assure you that there is no doubt whatever in my mind - and I think in those of any of the people who have looked at this issue - that, having proceeded with this, the result would have been devastating for our relationship with an important country with whom we cooperate closely on terrorism, on security, on the Middle East peace process," he said.
