TOFC
trailer on flat car (piggy back)
TPQ
threshold planning quantity
TRI
toxic release inventory
TSCA
Toxic Substance Control Act (Public Law 99-519)
TSDF
treatment, storage, and disposal facility
TU(s)
transportation unit(s)
UEL
upper explosive limit
UFL
upper flammable limit
UI
unit of issue
UL
Underwriters Laboratories, Inc.
UMMIPS
Uniform Materiel Movement and Issue Priority System
UN
United Nations
USACOE
United States Army Corps of Engineers
USAEHA
United States Army Environmental Hygiene Agency
USC
United States Code
USCG
United States Coast Guard
H-10
