sentences:  The original cable failure was due to cracks in diaphragm plates that anchor the ends of the cables to the steel tower, and significant cracks have subsequently been found in three of those anchorages.The engineering firm Wiss, Janney, Elstner Associates, Inc. was hired to investigate how the diaphragm plates became compromised.On June 8, 2012, a summary report of the investigation was released in which the failure was attributed to wind-induced "cable vibrations that induce damaging stress range cycles at fatigue sensitive details in the cable diaphragm plates."