There was an unconfirmed rumor about that. I do not know the source. see post on Websleuths of 03-12-2012, 01:33 AM and the post prior for information about the state of the Martinsville ping rumor 9 months after LS disappeared.Somebody correct me if i'm wrong but didn't Rosenbaums cell phone ping Martinsville the night of her disappearance?
There was a comment about a cell phone ping in Martinsville on the TG blog site on July 20, 2011: http://tonygatto.com/2011/07/16/landfill-not-yet-searched-in-lauren-spierer-case/