Simply:

  What recommendations has the federal government made to protect human health?

  The government has developed regulations and guidelines for 2,4,6-trinitrotoluene. These are designed to protect the public and workers exposed to 2,4,6-trinitrotoluene from potential harmful health effects of the chemical. Since 2,4,6- trinitrotoluene is explosive, flammable, and toxic, EPA has designated it as a hazardous waste. The Department of Transportation (DOT) regulates the transport of 2,4,6-trinitrotoluene because it is a hazardous material. DOT specifies that when 2,4,6- trinitrotoluene is shipped, it must be wet with at least 10% water (by weight) and it must be clearly labeled as a flammable solid.

  The Occupational Safety and Health Administration (OSHA) regulates levels of hazardous materials in the workplace. The maximum allowable amount of 2,4,6-trinitrotoluene in workroom air during an 8-hour workday, 40-hour workweek, is 0.5 mg/m3. The National Institute for Occupational Safety and Health (NIOSH) recommends that the concentration in workroom air be limited to 0.5 mg/m3 for up to a 10-hour workday during a 40-hour workweek.