Investigators Tuesday said they discovered a crack in the gas main outside the two buildings destroyed by last week’s deadly explosion in East Harlem, an indication that a failure in the main caused the catastrophe.
In a carefully worded statement, the National Transportation Safety Board said the 8-inch cast iron and plastic main under the street “failed the pressure test,” which showed that the low-pressure pipe had a leak “adjacent to” 1646 Park Ave., one of the destroyed buildings.
