The inquiry Scrutiny attributed Causation the blade fracture to metal fatigue , caused Causation by heavy vibration in the newly upgraded Cause_to_make_progress engines , which had been tested Testing only in the laboratory and not under representative flight conditions .

The eruption Catastrophe was preceded Process_start by a two-month series of earthquakes Catastrophe and steam-venting episodes , caused Causation by an injection Motion of magma at shallow depth below the volcano that created Creating a large bulge and a fracture system on the mountain 's north slope .

Earnhardt was the fourth NASCAR driver killed Killing by a basilar skull fracture during an eight-month span , following Adam Petty in May 2000 , Kenny Irwin , Jr. in July of 2000 , and Tony Roper in October 2000 .

though early reports Reporting indicated Statement that she had been hit Attack by shrapnel or the gunshots , the pakistani interior ministry initially stated Statement that bhutto died Death of a skull fracture sustained when the force Causation of the explosion Attack caused Causation her head to strike Attack the sunroof of the vehicle .

the sequence encompassed both unk and intraplate activity that was associated Collaboration with the mendocino triple junction , a complex system of three major faults ( including the cascadia subduction zone , san andreas fault , and mendocino fracture zone ) that converge Come_together near cape mendocino .