How long are the documents kept in the WSS 3.0 Recycle Bin?
There are two levels of Recycle Bins in WSS 3.0. When a user deletes a document it is kept in the first tier of the Recycle Bin for up to 30 days. During this period the user can restore the document from the first tier Recycle Bin. If a deleted item is not restored within 30 days from the first tier Recycle Bin, it is moved to the second tier of Recycle Bin (the site collection’s Recycle Bin) where it remains for an additional 30 days before it is permanently deleted. The second tier Recycle Bin at the site collection’s level is only available to the administrator.