A national campaign to register the people who performed rescue, recovery and clean-up activities at the World Trade Center after the terrorists' attack has increased filings by tenfold the New York State Workers' Compensation Board announced on the anniversary of 9/11.

The Board launched the Tell Us You Were There campaign, this summer encouraging World Trade Center workers to file the eight-question WTC-12 form.

A total of 31,543 people, the Board said have filed a WTC-12 form with it since it was introduced in 2006. The WTC-12 advises the Board that the filer performed rescue, recovery and clean-up efforts for the World Trade Center.