# Radioactive materials bearing Class 7 labels or Fissile label — domestic surface — Postal shipping restrictions by item category

For Radioactive materials bearing Class 7 labels or Fissile label, item category is Radioactive materials bearing Class 7 labels or Fissile label — domestic surface; carrier is USPS; restriction type is prohibited; scope is domestic mail via surface transportation; conditions is Radioactive materials bearing or required to bear Radioactive White-I, Yellow-II, Yellow-III, or Fissile label are prohibited from domestic surface mail, recorded from its source on 2026-08-04.

- **Item category:** Radioactive materials bearing Class 7 labels or Fissile label — domestic surface
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **Restriction type:** prohibited _(our reading, not quoted from the source)_
- **Scope:** domestic mail via surface transportation _(our reading, not quoted from the source)_
- **Conditions:** Radioactive materials bearing or required to bear Radioactive White-I, Yellow-II, Yellow-III, or Fissile label are prohibited from domestic surface mail _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> Domestic Mail via Surface Transportation: Radioactive materials bearing or required to bear a Class 7 Radioactive White-I, Radioactive Yellow-II, Radioactive Yellow-III hazardous materials warning label, or the Fissile label

## Source

- https://pe.usps.com/text/pub52/pub52c3_026.htm

Last verified: 2026-08-04. Review by: 2027-08-04.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).