Answer:
Living under the snow
Working underground
Facing constant threat of snow slides
Enduring severe winter weather
Working daily with explosives
Explanation:
They lived under the snows as well as working underground. From time to time they faced constant threat of snow slides and have to endure severe winter weather. On top of all this, they are working daily with explosive.
-living under the snow
-working underground
-facing constant threat of snow slides
-enduring severe winter weather with many storms
-working daily with explosives
C
immigration to the United States.
