SWIM know a person involved in small time LEGAL distrubution of NH3 tanks, and maybe just a bit on the side one might think. But you can bet your ass it isn't much because he get visited about every third tank he orders, and that seems to be getting more frequent.
And every single one of these tanks is being purchased by a totally legit busniess(all do blueprinting I think) that has been ordering the same thing for twenty years from him. So I would take a toothbrush if you try to go get one with a bogus company name that isnt of the highest substance, with bank accouts that are aged and taxes paid on employee's etc...
One option which might be usefull for additional safty was brought to SMIM's attention by a sympathetic friend in the chemical distribution/waste cleanup industry. Whenever the boys come and review activity, it is most often triggered an interest in a specific target but they almost always collect the entire book of grey area activity over the perceeding period. They would then prioritize by window of opportunity, so someone with a single order being picked up tomorrow would be placed above a monthly standing order, prepaid for the next three months to lock in quantity pricing.
Sense industrial chems are cheep outside of the blackmarket, paying for three and getting two, whould seem worthwhile. paying for three and getting one, would give you very good deterance it would seem, especially if your first order was close at hand.
TrickE
And on the eight day, God created Meth...
... and hasn't done much of anything usefull since!