New Jersey Statutes Title 26. Health and Vital Statistics 26 § 6-38

No dead body of a person who has died of smallpox, cholera, yellow fever, typhus fever, plague, or from any disease publicly declared by the State department to be communicable, shall be disinterred or removed from any grave, tomb, vault or place within this State unless the body was originally interred in a metallic case, hermetically sealed, and then only by the order of and under the direction of the local board within whose jurisdiction the body was buried.

The requirement as to the use of a metallic case shall not apply where the body has been embalmed prior to burial and buried or interred 3 years or more.