Hundreds of construction workers stopped what they were doing Friday morning at Ground Zero to bow their heads at 9:08 a.m. Several air horns sounded off in unison at that time and the normally frantic pace of construction became quiet.
Related:
Decade after September 11, New Yorkers ready to move on
Inside the "bigger, better" Trade Center

John Makely / msnbc.com
Workmen at the World Trade Center site in New York unfurl a flag following the moment of silence observed by all the workmen on the site at 9:08 am on September 9. They will not be working on Sunday.

John Makely / msnbc.com
Construction workers observe a moment of silence at 9:08am on 9/9 at the WTC site.

John Makely / msnbc.com
Workmen at the top of the Freedom Tower observe the moment of silence.

John Makely / msnbc.com
As early morning preparations were under way at the 9/11 Memorial, hundreds of workers observed a moment of silence at 9:08 a.m. The workers will not be at the site on Sunday so they took a moment to recognize the tenth anniversary on Friday.
People gathered at Ground Zero observe a moment of silence on Friday, to honor the victims of 9/11.