yeah, but point is more like that we do not need hard to refine ( that is why are they called rare earths ) materials from china, if those magnets were strong as neodymium ones. which they are not in video.
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problem with chemistry is most of these things are easily made in garage.
For example Slovak military is training disposal of homemade explosives / chemicals by watching NurdRage videos ;)
not that big a deal, but you do have to register and have basic security, ammonium nitrate is by todays standards just one step up from black powder, and if it's a proper company with mechanical and chemical engineers signing off then it's literaly just paper work.All in all industrial type experimenting involves avoiding exuberant exothermic reactions and dramatic kinetic events, with or without an electrical component, just about everyone involved has a story, and there are plenty of injuries and fatalities.
One of the hard parts of bootstraping any industrial process is having people who have the knowledge and experience to train people in how to do things and not get hurt, it's not "saftey" as much as survival skills.
As Kevin Kelly said about tribal lore: "In many cases the only way to do an experiment safely is to find a more experienced person to help. This is not book-learning, it's your life at stake. There is an unbroken chain of these people leading right back to the first guy who survived, and you want to be part of that chain."
Fertilizers and a ball mill in a garage is just the classic direct highway route from nothing to pipe bombs, so there are going to be checkpoints along the way.
Fertilizers is what we call "a gateway chemical" first thing you're putting some ammonium nitrate on your crops to make more than break-even this year, next thing you know it's a U-Haul parked up in Oklahoma city. We need to have common sense fertilizer control laws. Mostly it will be police who can use fertilizer, sometimes though we'll let a private detective (ex-police) use fertilizer.
