RE:A Comment On The US SPRThat is correct , the reserviors are mined out of salt caverns . To empty them they are filled with water equal to what oil is removed , while the oil doesn't react with the salt , the water disolves it and begins to undermine the reservior integrity .
Leewardcape wrote: Awhile back I read that it is not possible to keep draining the SPR: at some point there will be damage to the caverns themselves...also, I believe this is supported in the Act that governs the SPR: there is a defined limit that it may be drained to..if I have time I'll research this...