who had been shouldering, who had been piling, who had been dumping
Быть молоды́м в наше вре́мя - э́то значит нести́ большую отве́тственность.
Being young in our time means shouldering great responsibility.
Мужчина, взваливавший тяжести весь день, отдохнул.
The man, who had been shouldering heavy loads all day, took a rest.