Nigel,
I can't remember ever seeing a high bypass jet engine, after hitting the ground with such force as to rip it off it's pylon and throw it down a field, with the fan spinning at moderate/high power on impact, that didn't sustain a high amount of fan blade damage
Can you ?
Here's what I would have expected it to look like if it was producing power..... i.e. the No.2 engine.
PJ2