I personally looked into the allegations against two of the individuals who were investigated, talking to multiple witnesses, and found them to be credible. Although the university did not name the individuals, I am doing so below.
Update and correction:
The two who were given warnings are Rob Blumenschine of Rutgers University and Ron Clarke of Wits. The third was Steven Churchill of Duke University. Some details based on my own reporting:
Rob Blumenschine: During my investigation for Science of the Brian Richmond case at the American Museum of Natural History, several women who had worked with Blumenschine in earlier days told me stories of being personally harassed by him. I did not follow up on these reports, nor do an investigation of Blumenschine, but found the allegations credible given the reputations of the women who told me about it.
Ron Clarke: During my investigation of the Richmond case, three women told me they had been harassed by Clarke on the Wits campus in South Africa. Two of them were willing to discuss their allegations in detail. I find their stories to be credible.
Steven Churchill: While investigating the Richmond case, numerous anthropologists told me that Churchill had been disciplined in earlier days for at least one inappropriate relationship with a student. I did not investigate those claims at the time although they were widely known in the anthropology community. More recently, however, sources approached me who felt that Churchill had not been adequately disciplined by Duke for that alleged behavior. I began to investigate and found a number of sources, currently at Duke and no longer there, who gave me details. The essence of the allegations was that Churchill had engaged in a series of inappropriate relationships with students (mostly undergraduates) during the 1990s, and into the 2000s. As a result of complaints, he was lightly disciplined in about 2007. His position as chair of the evolutionary anthropology department at Duke was not renewed, and according to sources, he was put on paid leave for a semester. He then returned to Duke.
Recently sources at Duke told me that there had been, and still was, concern among numerous colleagues that Churchill's punishment had been too light and that the university had swept it under the rug.
Also recently, this past history was made known to Lee Berger's team in South Africa, with which Churchill is associated. According to multiple sources, Churchill was required to make full disclosure to the team so that team members would be aware. These sources indicate that Churchill apologized and claimed that he had not behaved in such a way since the original episode at Duke.
However, two sources indicated to me that more recently, ie within the last 5 years or so, Churchill did engage in behavior in South Africa that could be interpreted as sexual harassment. No complaints were made about this behavior at the time, nor since.
Update August 21
As some may know, Wits has been grappling with cases of sexual misconduct over the past few years, and several faculty members in various academic fields have been fired for violating the university's "zero tolerance" policy. Today a source brought to my attention another situation close to anthropology home base, however, that of a Wits lecturer in archaeology, Geoffrey Blundell, who allegedly had an inappropriate relationship with a student. The original report in the university newspaper did not name Blondell, but the parties were named in a public decision by South Africa's Press Council after complaints about the article (the Council dismissed most but not all of the complaints.) This episode apparently lead to a new policy by Wits prohibiting such relationships between faculty and students. This is an increasing trend in US universities as well, as the power imbalances in such relationships--which makes actual consent difficult if not impossible--becomes more widely recognized.
A case of bullying in the UK?
Word also reaches us that the University of Bath has investigated charges of bullying students and postdocs by paleontologist Nick Longrich. A university spokesperson released the following statement:
“All staff and students have a right to be treated, and have an obligation to treat others, with dignity and respect. We can confirm that an investigation has taken place following allegations of bullying and appropriate disciplinary action has been taken. In fairness to all those involved we will not be commenting further at this time.”
I will have updates on this developing story as they are available.