Salt can be used to lower the snow's freezing point.
It was usually used before the snow come.
But the higher ups reaction was a bit slow this time. They had already asked for the salt, but it had only arrived recently due to the distance and also the snow on the road. These snow come faster than they thought.
Not to mention, there was also the incident when a lot of people have various abilities and so on not long ago.
Salt was poured on the road. Then, as snow falls, the salt mixes with the snow, lowering the freezing point. The result is a brine solution, which prevent subsequent ice forming. Thus, the road would be passable and there was no snow piling up.
It was what the base intends to do.
Now that they had the salt, they just needed people to work.
So, the mandatory task was released.
