Section 153.239 - Use of cast iron(a) Cast iron used in a cargo containment system must meet the requirements of § 56.60-10(b) of this chapter.(b) For purposes of this section, the term "lethal products" in § 56.60-10(b) means those cargoes that Table 1 references to § 153.525 or § 153.527 .CGD 78-128, 47 FR 21207, May 17, 1982