49 CFR 171.8 reads, “ORM means other regulated material. See §173.144 of this subchapter.” That’s not much to go on but it’s a start. §173.144 defines an ORM-D as: Until December 31, 2013 and for the purposes of this subchapter, “ORM-D material”…
Former and Present Other Regulated Materials (ORM)
Currently, and only until December 31, 2013 when it will cease to exist (unless an extension requested by US DOT to December 31, 2015 is granted), there is only one category of Other Regulated Material. In the distant past (known…