The break in a single fibre optic T-3 cable that meant that 60% of long distance calls to and from the New York area failed to get through and caused severe delays at all three of the airports that serve New York City on Friday and disrupted trading on the Commodity and Mercantile exchanges (CI No 1,584) was inadvertantly caused by one of AT&T Co’s own construction crews: the crew was removing old fibre cable from an underground conduit in Newark, New Jersey when splices in a new cable next to it broke.