The names of tens of thousands of New York City POlice Department uniformed officers and civilian members who worked at the World Trade Center are now at the Mount Sinai School of Medicine.

Mayor Michael Bloomberg handed over the names of 39,921 people, along with their job title, age, race, and gender on Monday.

This comes after the city initially refused to turn over the information, because of privacy concerns.

Mount Sinai is treating the first responders.

And the Patrolmen's Benevolent Association wants to build a case with this information to get cancer on the list of eligible illnesses covered by the Zadroga Act.

Currently cancer is not covered.

The association also hopes the information can help responders who may be diagnosed with cancer in the future.