183 Former U.S. Air Force Bio-Environmental Engineer Kristen Meghan caught the military shipping **massive quantities** of aluminum, barium, and strontium to be deliberately mixed into jet fuel on bases. (twitter.com) 🐸 PEPE FARMS REMEMBERS 🌾 posted 118 days ago by mmtwo 118 days ago by mmtwo +183 / -0 53 comments share 53 comments share save hide report block hide replies
Aluminum oxide is corundum, which is just one below diamond on the Mohs hardness scale.
Of course it's used for industrial purposes. It's really hard.
Corundum is better known as rubies, sapphires, emeralds, topaz, etc.