These tanks are used in a wide variety of industries like food packaging. A company in Eugene ferments and brews soy sauce(s). Once the fermentation is finished the liquid is pumped through a filter system and then it's pumped into these huge cone bottom tanks that feed into the bottling system.
I've seen them used on small farms for water storage for livestock, watering systems (drip and other systems using inline fertilizer injectors), etc.
The shipping costs are bad enough for the actual tanks but when you add one of the pre-made stands the price is friggin' crazy!
One minute I held the key
Next the walls were closed on me
And I discoverd that my castles stand
Upon pillars of salt and pillars of sand