Concerns are being raised about the metal sensitivity and potential dangers of metal particulate debris.
Here a clutch of stones and metal debris in the train's path or by its side.
Except for some dents and scars from flying metal debris, his own car seemed to be intact.
"I'm surprised they didn't spot the metal debris."
But there may be torpedoes in the other corners of the first compartment, which are littered with metal debris.
Though she still could not see, the sound of collapsing metal debris was unmistakable.
But if the cracks caused spraying of metal debris onto the tracks, that would pose a derailment risk, they added.
The metal debris of the heap started to collapse.
Two figures collapsed against the metal debris and tumbled into the room.
Where once a fleet of spaceships had been there now existed only torn and jumbled metal debris.