N. Korea beefs up guard at nuclear test site - Second nuclear detonation in the works?

[NNN0LHI]

http://www.khaleejtimes.ae/DisplayArticleNew.asp?xfile=data/theworld/2007/October/theworld_October440.xml§ion=theworld

14 October 2007

SEOUL - North Korea has increased security around a site where it conducted a nuclear test last year, South Korea’s Yonhap news agency reported on Sunday.

“Intelligence information was obtained that guards were being reinforced at the nuclear test site, along with (additional fencing),” it quoted an unnamed South Korean government source as saying.

“South Korea and US authorities are keeping a close watch on the area and analysing the North’s intentions.”

But the source dismissed the likelihood of a second test at the Gilju site in North Hamkyung province, citing Pyongyang’s pledge to the international community to disable its nuclear facilities.

[NNN0LHI]

1. I am no nuclear physicist or anything but doesn't NKorea have to test another one or two?

Isn't that part of the process of R&D for nuclear weapons? I mean no one ever tests just one. Got to work out the bugs. Thats why the US tested dozens of them. Am I right about this?

Don