A survey of the bottom of the harbor in Charleston, S.C., is shown in a research boat on the harbor on Friday, October 12, 2012. Black areas on the chart will have to be checked more closely to see if... more 
A survey of the bottom of the harbor in Charleston, S.C., is shown in a research boat on the harbor on Friday, October 12, 2012. Black areas on the chart will have to be checked more closely to see if they are artifacts that would have to be protected in deepening the harbor. Researchers from Coastal Carolina University are conducting a survey as part of a planned $300 million harbor deepening project. (AP Photo/Bruce Smith). less 
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Associated Press | Photo By Bruce Smith
Sun, Oct 14, 2012 9:45 AM EDT