> Could shredded paper be reconstructed?

> No. A few thousand other bags contained paper that had been shredded into incredibly small pieces in 1990. This material was destroyed back in 1991 after inspection by the Stasi Records Office. Hence, there is no longer any paper shredded by the Stasi at today's archive .

Shredder chads from the 90s can definitely be reconstructed. This is why the NSA has gradually decreased the maximum size permissible for chads. If they'd held on to that material they could be recovered today.