The NYPD and Brookhaven National Laboratory will begin studying air flow in the subway system
Tuesday, Jul 9, 2013
NYPD subway gas-attack test Monday
The gases are harmless, non-toxic, colorless, odorless and unable to react with other airborne chemicals, sources said.
By Alfred Ng / NEW YORK DAILY NEWS
Sunday, July 7, 2013, 7:38 PM