Dr. Antonios ZavaliangosDepartment head Antonios Zavaliangos was quoted in an article in The Morning Call about a cracked gas main in Allentown, PA that caused a natural gas explosion, killing five people.
It appears the 83-year-old cast iron pipe cracked to cause the natural gas leak. Zavaliangos was quoted in the February 4th article about current high-tech equipment used in the materials field that can help to determine the nature of the crack and how it happened.