Over one hundred members of the New Jersey Construction Trades council signed this memorial sign thanking rescue workers and sending condolences to those who had lost family members.
Electricians, laborers, pipefitters, ironworkers, carpenters operating engineers and boilermakers are among the trades represented on the list, which was at Battery Park when the photograph was taken, but subsequently moved to the Ground Zero area.

Photograph taken September 28, 2001.

From the exhibit Missing: Streetscape of a City in Mourning, New York Historical Society, photograph by Martha Cooper.

See this image in the MISSING exhibit.