Verification Letters of DOT Required Security Plans The DX Group’s DOT required security plans have been
developed to provide our companies and their customers methods to enhance the security of
operations involving hazardous materials. The plans enhance protection to the public, the
economy and national security, as well as ensuring the delivery of hazardous materials to
essential users under emergency situations. To obtain copies of the
letters stating that our security plan meets the requirements
of DOT 49 CFR, Part 172 (HM-232), please use links below.
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