Answer: The correct answer is : The men worked six days a week, the base camps built them 70km away. During the winter there were 44 snowstorms, there were storms that lasted two weeks, too much snow was accumulating that blocked the entrances of the tunnels, avalanches frequently buried workers. The mostly Chinese workers had to live in the cold, spent weeks without seeing the sun, endured avalanches, rock slides, diseases, accidents, freezing, while working up to 12 hours a day.
