>They failed to maintain proper maintenance resulting in mechanical failure of the train.
Anon assigns an 80% probability that was sabotage committed by agents unknown working on behalf of unknown nation state. Anon assigns a 95% probability that unknown nation state is China.
Thick black smoke means the oxygen to fuel ratio is very rich. As the fuel to oxygen ratio reduces because less fuel is available then the color of the smoke will lighten. True of gasoline, wood, any fuel.
Murray Head - One Night In Bangkok "From CHESS"
One town's very like another
When your head's down over your pieces, brother