A worker's arm was caught in a piece of machinery early Thursday at the Good Humor-Breyers plant in Hagerstown.
Diana Shafer of Hagerstown was cleaning a machine about 3 a.m. when her arm was caught in the machine, said Pete Madeo, spokesman for the plant at 1100 Frederick St.
Shafer had injuries to her forearm and was flown by helicopter to a Baltimore hospital. She was in serious condition late Thursday after undergoing surgery at Union Memorial Hospital, a spokeswoman there said.
Shafer, who is in her 40s, has worked there for about 10 years, Madeo said.
"She was a good employee, a hustler and a hard worker," Madeo said.
It was not known Thursday what caused the accident.
Madeo said Shafer's shift most likely began Wednesday about 10 p.m. or 11 p.m.
"She was in the middle of the shift, probably cleaning up and then restarting the machinery," Madeo said.