I was issued a SSN # when I had a totally unrelated Visa issued in the 90's. I unfortunately shredded that card thinking I'd never need the document again (Murphy's Law at work). I did manage to get the # again from the SSN office. I assume that #1, they will re-use the same number even if it was issued under my former married name (i've since been divorced), and #2, that I can use that card in my dealings with AOS and EAD with or without the card being in my possession. What are your thoughts?