From what I seen in pics and news, looks like a LP turbine blade, and there are alot of cars sometimes on the RWY 23 also. The GE-90 is amazing, and made just for the 777.
Hats off to the crew that did what they were taught and trained to do, and other than small damage on ground (cars) per reports anyway, all else is well, they dumped their fuel, and landed with no other known problems.
Russian Satelite, GET REAL PLEASE!