Not exactly about meth in north korea but 55:18 minutes in - theres your north korean methamphetamine deals in black and white.
If you haven't heard of this guy's journey into north korea's insider circle as a mole and exposed an international arms deal. now...if weapons are being shipped and ran across the place - it'd be easy as pie for kilos n kilos, it would weigh less than the weapons, but i think you'll find it VERY interesting just how fuckin crazy that place is - 49:24 in, theres one point they go to a ghetto, into a basement, and then a big door opened to....well, you'll just have to watch n see

and if that can be there, a MASSIVE lab could be too. i mean look at their catalog for crazy 'weapons'/bombs/SKUD MISSILES....for them, clearly, the skies the limit (and also, at 1:28:41 there is talk...of 'this triangle' hmmmmm oil huh? that all?)
i'd actually advice people that aren't even interested in the meth aspect to watch this, as it starts slow but oh boy...does he take and show you some CRAZY places nobody has ever seen before beside 'those inside the circle' people - all done on a whim and joined a kinda 'Copenhagen friends of north korea' but didn't expect what he would. the balls on the mole and his friend are so big he can use them as space hoppers