LAM: So who were these people who were questioned, were they all political detainees or did they come from a broad spectrum of asylum seekers?
   NOLAND: Oh, they came from a very broad spectrum of North Korean society. Most of the North Korean... In the early days, people who left North Korea tended to be elites who in a literal sense were defecting, but since the famine of the 1990s, over the last 10-to-15 years, many of the people who leave the country are common people, especially from the upper part of the country provinces in the far northeast. So in our sample we had just regular workers, farmers, school teachers, we had some people who had been in the army, some people who had been government officials or party officials, some merchants. There was quite a cross section of North Korean society.
   LAM: And Marcus, tell us a bit more about the findings - the harshness of North Korean prisons I think is quite well documented - but it's how the prison system is being used, that's of interest I understand?