Joel Meyerowitz was the only photographer with regular access to Ground Zero in the weeks and months after 9/11. As part of the November 2010 TimeFrames issue, TIME commissioned Meyerowitz to travel back to Ground Zero and revisit some of the locations in his seminal work, Aftermath: World Trade Center Archive.

We interviewed him after the shoot and asked him to compare his experience and the pictures he made in 2001-02 to the ones he made for TIME.