EagleTribune.com, North Andover, MA

World/National News

March 14, 2014

Investigators try to pinpoint deadly gas leak

NEW YORK (AP) — Rescue workers using dogs and thermal-detection gear searched the rubble Thursday for more victims of a gas explosion that killed at least seven people, while investigators tried to pinpoint the leak and determine whether it had anything to do with New York’s aging gas and water mains, some from the 1800s.

At least five people were unaccounted for after the deafening blast Wednesday morning destroyed two five-story apartment buildings in East Harlem that were served by an 1887 cast-iron gas main. More than 60 people were injured.

Fire and utility officials said that if the buildings were plagued in recent days or weeks by strong gas odors, as some tenants claimed, they have no evidence anyone reported it before Wednesday.

Robert Sumwalt of the National Transportation Safety Board said the gas main and distribution pipe under the street had been examined in a crater and were found to be intact, with no obvious punctures or ruptures. They had not been torn from the ground, he said.

However, he said NTSB investigators had been unable to conduct a fuller examination because of the rescue effort underway, and it was still unclear whether the leak came from inside or outside the buildings.

He said there had also been a water main break at the site, but it was not known if that contributed to the gas explosion or was caused by it. The water main was installed in 1897, according to the city.

Authorities also hoped to reach the basement — still under rubble — to examine heating units, meters and other equipment that might hold clues to the blast, Fire Commissioner Salvatore Cassano said.

“We can only get conclusive evidence when the fire is out, when the rescue is completed, and we really get a chance to look at all the facts,” Mayor Bill de Blasio said.

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