Federal regulators have cited a Houston machine shop for 13 alleged safety violations, contending it exposes workers to amputation hazards by failing to guard machinery parts.

The U.S. Department of Labor’s Occupational Safety and Health Administration on Monday said it has proposed penalties of $57,750 for Dimensional Machine Works. The company makes machine parts for a variety of clients.

OSHA inspected the company this summer as part of the agency’s national emphasis program on amputations.

Devyn Nguyen, manager of Dimensional Machine Works, said he received the citations from OSHA late Monday afternoon. He said the company is currently reviewing the citations and will rectify the problems quickly.

Of the 13 violations announced Monday by OSHA, seven are for repeat problems including a failure to protect workers who service dangerous machines, failure to install guards to protect against rotating machine parts and failure to provide a written hazard communication program.

The company was cited for similar violations during a 2009 inspection, according to OSHA. At that time, the company was fined $5,850 for a total of 10 violations, the government agency’s inspection records show.

On Monday, OSHA also announced that it cited the company for failing to guard conveyors, chains and sprockets on bench grinders as well as failing to provide forklift training, chemical labeling and hazard communication training.

“By failing to guard machinery properly, Dimensional Machine Works continues to put workers in harm’s way,” David Doucet, OSHA’s area director in Houston North office, said in a written statement. “Unguarded machinery has the potential to amputate body parts and, even more devastating, end a worker’s life.”

Dimensional Machine Works has about 37 workers, according to OSHA.