Debris is common, it's why airports have regular sweeps of the tarmac by important men in fluro-jackets wearing sunglasses.
Who was ultimately responsible for Concorde bursting into flames was Air France themselves. Plans had been put forward to fit the fuel tanks with protective kevlar jackets, but they said it was too expensive. The fact that the jet that went down was a known gas-guzzler and was carrying a lot of fuel, combined with extra weight being stowed on-board without the ground crew bothering to tell the pilots, meant it fell like a stone when it went down to only the starboard engines.
I'll bet 113 lives that their laziness cost them more. This report is far too simplistic. It was a whole catalogue of errors that crashed the plane..........and 9/11 that finally killed the Concordes for good.
I miss them
EDIT: They also burned a lot less fuel taxiing that they thought they would. More unwanted weight.
Edited by PrivateCustard, 06 December 2010 - 04:53 PM.