Transportation Security Administration (TSA) officers may swab a passenger's hands to check for the presence of explosive residue.
Where were the traces of the past found
You didn't say if you wanted it used as a noun or a verb so here are two sentences.There were no traces of the criminal.When he traces the picture, he always adds something to it.
Where were the traces of the past found
Where were the traces of the past found
Traces of a Dragon was created in 2003.
Traces of Death was created in 1993.
A Matter of Traces was created in 1958.
Traces was created on 1998-04-20.
Human Traces was created in 2005.
Traces of Red was created in 1992.
Traces of Catastrophe was created in 1998.
Traces of Smoke was created in 1992.