I am refreshing this thread, after giving it a new title to emphasize the fact that the original question was NOT answered.

I have seen this happen often, and it dismays me: someone asks a question, and someone else who apparently didn't read the question carefully posts a spurious answer, and thereafter everyone ignores the question.

I'm hoping we can do better.

A Google search for "George Holden" and Aberfan turned up nothing useful.

Greenm posted recently at Mudcat although his posts are very infrequent.