Noxious substances, other items on board
If things had gone wrong, the ship could have broken apart, causing the toxic contents of the ship to leak.
They include thousands of liters of lubricants, paints, insecticides, glue and paint thinners as well as 10 tanks of oxygen and 3,929 liters of carbon dioxide.
Refrigerators filled with milk, cheese, eggs and vegetables have been closed tight since the disaster.
And the freezers that remain intact contain the rotting remnants of what were once 1,268 kilograms of chicken breasts, 8,200 kilograms of beef, 2,460 kilograms of cheese and 6,850 liters of ice cream.
The salvage operators set up two rings of oil booms equipped with sponges and skirts that extend into the water to catch any escaping debris.
Francesco Schettino, the captain who guided the ship off course, faces charges of manslaughter, causing a maritime disaster and abandoning ship with passengers still on board. His trial resumes September 23 in Grosseto.