"ShadowHawk" wrote in message
news:vyyXb.37236$jk2.81553@attbi_s53...
Do a google search on electrolysis, and you'll find quite a bit of info.
Here's one particular article written by a friend of mine - Richard
Angelico of New Orleans, La. He is a fellow relic-hunter who finds quite
a
bit of good 'ole Civil War ordinance - specifically - he finds a good many
bombs and cannonballs.

Some may be interested to know that they use this method to reduce rust and
to remove salt from metal objects recovered from ancient ship wrecks. The
time they leave it in the tank is often up to two YEARS. Yike.

Ed Huntress