It took six decades to complete.
Such data suggest that a full assessment of Providence Talks will take decades to complete.
Archaeologists believe thousands of workers toiled for decades to complete the 11 churches here.
It took the Manchu several decades to complete their military conquest of China.
The cycle, started in 1971, took nearly two decades to complete.
The 4-million-square-foot MetroTech office complex nearby, for instance, took nearly two decades to complete.
This ethnic engagement is a longer-term part of that drive, one that some think could take decades to complete.
Jennifer Post, a spokeswoman for the state, said reclassification was a complicated and expensive process, and other states had also taken decades to complete it.
Three months ago, the Senate passed a nonbinding resolution urging the state Department of Transportation, which had turned aside the proposal for decades, to complete the highway.
The amount was later reduced, but many experts had predicted when the case started that it would take decades to complete.
However, it will take until 2015 to fit the £3.5bn technology on high-speed lines, with slower routes taking "decades" to complete.
