I listened for the factory whistle and regretted my lack of a toolbox or lunch bucket to lug.
From the businessweek.com
The strings echo the factory whistle in the distance.
From the timesunion.com
At 3 o'clock, the factory whistle blew.
From the timesunion.com
Despite our reputation as Wonkville, with workaholics whose collective factory whistle always blows in the dark, Washington is also a place that plays hard.
From the washingtonpost.com
The noise is akin to that of a whistle at a factory, signifying the beginning of a shift.