Back in the days before pilots a.k.a. "cowcatchers," cattle could cause the train to derail when struck--potentially killing the passengers on board. Putting salt on a railroad track would attract cattle and other large hooved animals. In Alabama, it is still considered a crime because the it's cruel, and the animal could still potentially hit the cab even though modern trains are built with pilots and anti-climbers*.
*Anti-climber-a device to help prevent objects struck by the train from rising up and hitting the cab of a locomotive.
the salt starts to disintegrate
It is illegal to put salt on a railroad in Alabama because salt can corrode railroad tracks and cause damage to the infrastructure, potentially leading to safety hazards for trains and passengers. Salt can accelerate the degradation of the tracks, leading to increased maintenance costs and safety risks for the railroad operators.
It dies.
explodes
It floats.
People sometimes put their ear on a railroad track to see if a train is coming. It does not work because of the iron rail, it works because of the vibrations the train makes on the rail as it is moving.
Nothing. They're terrestrial.
The color of the flame depends on the metal from the salt.
The concentration of salt increase up to saturation.
iii doontnt knoww?
They die
It fizzes up and overflows.