But he did not believe that the group's senior leaders had necessarily known of it.
Geologists had always known of it, and Mitchell had been working on exploiting it since the early 1990s.
Mr Nairne said this part of the story was "news to me" and he had not known of it before the documentary was broadcast.
Vampire bats, in a manner that would I am sure have delighted Charles Darwin had he known of it, have developed an ingenious way round this problem.
It was then, the Times reports, that Petraeus certainly became aware of the investigation, if he had not known of it before.
In other instances, they say, deserving consumers might have been turned away from joining a suit, although they could have qualified for another had they known of it.
"She said, 'If I had a child with Kafka, the whole world would have known of it, the whole world would have been filled with light'".
One of his victims was raped in the park two days before the jogger, a fact that could have helped the defense had the lawyers known of it, the report said.
Her story — or what is known of it from her interviews and her songs — is a perfectly preserved hippie tale, full of ideals, heartbreak and sleeping outdoors, and not arriving on time.
One notes anxiously that the video shows several soldiers walking casually by without intervening, and that, for two years, some soldiers must have known of it, but kept quiet.
Nuristan is a remote region, high in the northeast mountains of Afghanistan; little is known of it, but it was the first region to oust the Russians and the last to convert to Islam within Afghanistan.
