The restoration involves the creation of two zones.

Environmental restoration involves many different approaches and technologies depending on the requirements of the situation.

This restoration involved a new clock to replace the previous one dating from the early nineteenth century.

The restoration does not involve gluing bits of bone together, however.

The restoration has so far involved the planting of 7,000 shrubs, 12,000 trees and 161,000 smaller plants.

This most recent restoration began in the late 1970's and has involved dozens of specialists and technicians.

The restoration involved removing elements of a 1940s renovation that had nearly destroyed the top of the staircase.

The restoration of relations with Vietnam involves complex emotional, diplomatic and economic issues that are perhaps without precedent in our history.

After efforts to salvage the area's timber, restoration again involved planting of pine seedlings.

The restoration involved approximately 81,000 workers and was completed at the end of 1948, looking only slightly different from the original building.