Quote:
Originally Posted by xoxoxoBruce
An underground fuel tank won't stay underground if it's empty and there is ground water to float it up.
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At sewage works in the UK the large circular tanks are never completely emptied to avoid the possibilty of them floating on ground water and being damaged. When being cleaned or serviced they have clean water pumped in as ballast.
None of you knows how long I've been waiting to share that fact.
