Much of the preservation work was performed by local volunteers.

It was confirmed that a separate fund be set up for preservation work.

The estate was opened to the public last month after two years of preservation work, which is still in progress.

He also maintains that the club has spent over $1 million in the last 15 years on preservation work.

In the early 1950s, the original negative was lost while being transferred from one film lab to another for preservation work.

Archaeological digs and preservation work were carried out in 1995.

He said foreign governments refused to provide aid for preservation work because they did not recognize his authority.

Iran plans to begin preservation work on the tower.

Removed from display late 2002 and into 2003 for preservation work.

A visit to the site can include watching preservation work in situ.