The fourth position of the Commodity/Special Handling Code is keyed
to Paragraph 14 of Appendix B of MILSTAMP and is shown at Figure 1-3.
This figure lists general characteristics of cargoes, including the
general types of hazardous cargoes. These characteristics are keyed
to an alphanumeric character that is in the fourth position of the
Commodity/Special Handling Code.
In Figure 1-3, six codes--the
characters H, M, Q, Z, 1 and 2--are associated with nonhazardous
cargo. Any character other than these in the fourth position of the
code indicates hazardous material.