ELDORA, Iowa (AP) — The Iowa worker safety agency has proposed fining the Iowa Human Services Department, saying the department’s school for delinquent juveniles isn’t protecting its employees. The Des Moines Register reports that school residents assaulted staffers at Iowa State Training School for Boys in Eldora during at least three incidents last spring. The Iowa Occupational Safety and Health Administration said in its Aug. 28 report that the staffers “were unnecessarily exposed to violent attacks.” In one, the worker had numerous teeth smashed out and suffered broken bones in his face.

The agency proposes more than $23,000 in fines for the department. The school’s home to about 100 boys who’ve been convicted in juvenile court. Human Services Department spokesman Matt Highland says he can’t comment, because the two agencies are negotiating a settlement.