"At least acknowledge that this was a source of comfort to surviving family members and recovery workers," he said.
The streets are filled with police officers, recovery workers on their breaks and tourists.
It also got some of the recovery workers talking about their own losses.
The operation lasted until 9 December 1979, with up to 60 recovery workers on site at a time.
Half a year later, recovery workers found his son's remains.
While many rescue and recovery workers are covered by their own health insurance, that coverage may become inadequate in the years ahead.
At least one more cruise ship is expected; it will also be reserved for recovery workers.
The recovery workers had been working through the night, most of them without time to stop and grab a bite to eat.
The recovery workers often spent hundreds of hours working 8 to 12 hour shifts.
Later that day, the city agreed to increase the number of recovery workers.