SAN FRANCISCO — Crews restoring the Murphy Windmill in San Francisco's Golden Gate Park are celebrating a milestone.

The windmill's 68-ton copper dome was placed back on top of the structure on Monday after undergoing nearly a decade of restoration.

The work is part of a multi-million dollar project to bring the six-story windmill, which once pumped water to the rest of the park, back online. Built in 1905, the windmill languished for decades until the restoration work began in 2002.

The project is expected to be completed by the middle of 2012, when the windmill's sails and gears should be back on and the area around it landscaped.

The project is being funded by public and private money.