CHICAGO (AP) — Federal authorities have cited an Illinois bumper-manufacturing plant with safety and health violations for allegedly failing to monitor workers' exposure to harmful materials while cleaning industrial tanks.

A Thursday statement from the Occupational Safety and Health Administration says Urbana-based Flex-N-Gate Corp. didn't take sufficient steps to monitor exposure to nickel, chromium, hydrochloric acid and sulfuric acid.

The agency says the company sometimes failed to do periodic medical checks of employees or to provide workers advanced training on potential hazards.