Searchers were sifting through tons of garbage at a south Georgia landfill Monday hoping to find an Atlanta couple who disappeared two weeks ago Monday.

Acting on a tip, representatives from several law enforcement and search agencies were looking for John and Liz Calvert at the Broadhurst Environmental Landfill near Jesup, according to Capt. Joe Naia of the Wayne County Sheriff's Office.

The search began Saturday, and as of noon Monday searchers had not found anything of significance, Naia said.

Naia said searchers were going through trash from the Savannah area as it arrived at the landfill. Trash deliveries were "backlogged by about two weeks, which is fortunate in a way because that's about the time they went missing," Naia said.

The 2,500-acre landfill receives trash from more than 20 counties in Georgia and several counties in Florida and South Carolina, including part of Beaufort County, S.C., home to Hilton Head Island, Naia said.

John and Liz Calvert vanished from Hilton Head March 3 after a meeting with business associate Dennis Gerwing. A week later, Gerwing was found dead of an apparent suicide in a rented apartment at Sea Pines, the same resort community where the Calverts spend part of the year on their yacht, the Yellow Jacket. Authorities named Gerwing an uncooperative person of interest in the Calverts' disappearance the same day he died.

John Calvert, 47, owns several Hilton Head businesses including the company that operates a yacht basin and another that rents out 125 vacation properties. Elizabeth Calvert, 45, is a business attorney at HunterMaclean law firm in Savannah. The couple also has a home in north Atlanta's Brookhaven neighborhood.

Elizabeth Calvert's brother, David White of Decatur, reported the couple missing March 4 after they failed to show up for business meetings.

Beaufort County Sheriff P.J. Tanner said at a news conference last week he was investigating a "worst-case scenario" and said he considered just about everyone a suspect in the case.