Work to dismantle a British army observation tower in Londonderry city centre is continuing.
The Masonic army base tower overlooks the Bogside
Stone throwers attacked the tower on Sunday, and an Army spokesman said on Monday contractors had to halt work.
Strong winds also made it too risky to deploy cranes on the Bishop Street site, known as the Masonic army base.
The watchtower is being removed as part of demilitarisation measures announced by Northern Ireland Secretary Peter Hain in August.
Army engineers began removing the watchtower on Sunday.
A section of the city's walls has been closed off for safety reasons during the work.
A second observation tower at the base is to be brought down early next year.
The rest of the base will also be removed, although an exact date for that has not been given.
Over the next two years, the government also plans to close the military base at Maydown police station and Rosemount barracks in the city.