Mo. Rev. Stat. ยง 265.390
265.390 Containers to bear inspection mark and plant number โ containers to state ...
265.390. Containers to bear inspection mark and plant number โ containers to state ingredients, net weight or measure. โ 1. When any meat or meat product which is prepared for human consumption shall be placed in a shipping container in a commercial plant where inspection is maintained under sections 265.300 to 265.470 , the person preparing the meat or meat product shall cause to be attached to the container a label bearing the official inspection mark and the approved plant number.
2. In addition, the container which directly contains the meat or meat product shall bear a statement of the ingredients including a declaration of artificial flavors, colors, or preservatives, net weight or other measure of contents and the official inspection mark.
(L. 1967 p. 371 ยง 9)