Salvage workers on Tuesday succeeded in the delicate operation of pulling the Costa Concordia cruise ship upright near a small Italian island off Tuscany, completing one of the biggest and costliest operations of its kind in about 19 hours. More than a year after the ship ran aground and after months of preparations, workers used a series of cables and pulleys to haul the 114,000-ton ship off its side and place it upright on an underwater platform built on the side of a reef near Giglio Island, in a process known as parbuckling. Before dawn, the head of Italy’s Civil Protection agency, Franco Gabrielli, confirmed that the ship had been pulled upright, with no environmental spills or damage to the coastline. More than 500 engineers, divers, welders and other salvage workers have been involved in the effort. Salvage company Titan Salvage won the tender to manage the project.