Would you believe Crain's thinks there are 1000 construction workers at the Atlantic yards site.

A Crain's New York Business article headlined Strike threatens $10B in construction projects contains this curious sentence, as noted by No Land Grab's Eric McClure:

Projects that could be halted include Forest City Ratner's Barclays Center in Brooklyn, which employs 1,000 construction workers.

His comment:

Either half of those "1,000 construction workers" must have invisibility cloaks, or Crain's needs to count again.

My comment: what's the source of their information?