A group of vocal anti-drilling activists Thursday night briefly disrupted a Drexel University symposium on exporting liquefied natural gas, giving the city a flavor of the opposition that LNG might arouse.

"I'm sorry, I'm going to have to interrupt you and ask you to sit down," City Councilman David Oh said to one of the activists. Drexel security personnel escorted about seven of the protesters out after they persisted.

Oh organized the event, attended by about 100 people, to explore the feasibility of locating a facility in the city to liquefy Marcellus Shale natural gas for export.

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