The two photos on the AIBN site don't seem to include further closeup of main rotor gearbox or the rotor. The first photo on the other hand may be showing us one of the lifting struts still attached to airframe, unless that is something else. Tail blades smashed, evidence of full speed rotation when they hit something. I would guess secondary, but shortly after the main rotor, possibly even a main blade or two as the main head peeled off.