prohibited hazardous materials

November is USPS Hazmat Awareness Month

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The Postal Service is reminding employees to always check packages for hazardous material markings and to ask customers if a parcel contains anything potentially hazardous.

The Postal Service continues to improve its longstanding hazmat policies and procedures to help prevent incidents, such as adding lithium battery marking, packaging and transport mode requirements; and controlling limits and packaging standards for corrosive fluids, including prohibiting highly corrosive fluids such as mercury that can leak and cause burns.