More than 40 workers who lived at a factory in Pennsylvania making materials for health care workers clocked out Sunday after nearly a month of work, WPVI reported Tuesday.

The workers spent 28 days straight working 12-hour shifts making gowns and N95 masks for health care workers at the Braskem American factory in Delaware County, Pa.

The workers unanimously decided in March to eat, sleep and live at the facility where they were making the equipment, according to the report.

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"There's been a glow in everyone's eyes," operations shift supervisor Joe Boyce told WPVI. "We're truly honored to be able to give back and support people we will never meet in some way."

“All the first responders, all the people on the frontlines, we thank you for what you’ve done. That’s what makes our job easy to do,” Boyce added.

Health officials across the country have warned of depleting supplies of the personal protective equipment necessary for front-line health care workers treating COVID-19 patients.

There are more than 804,000 confirmed COVID-19 cases and 43,200 deaths in the United States, according to data compiled by Johns Hopkins University.