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Byline: Patrick Seitz
More than a dozen robots have crawled under the rubble of the World Trade Center to help in search and recovery efforts since the Sept. 11 terror attacks.
They haven't found any survivors, but they've proved valuable in finding human remains and in steering disaster crews away from steep drops. Workers now are using robots to check structural integrity as larger areas are cleared.
Just as important, scientists and engineers learned ways to improve the machines for future search and rescue missions in other catastrophes.
"We learned a lot about future applications for the robots and areas they can be improved to be really valuable in these types of disasters," said Tom …