Although attempts were made at preservation, rot had already set in, and the tree was permanently weakened.
The painting, waiting its turn at preservation and restoration, is so enormous that it temporarily resides in a hallway.
If fact, the rock was so chopped up that even that long ago, the quarrying sparked efforts at preservation.
That trend began to reverse with the formation of community organizations in the 1970s and serious efforts at historic preservation.
The energies of man were before directed to the destruction of his species: they now aim at its liberation and preservation.
In the last decade several studies have looked at adaptive reuse and preservation of this unique structure.
Mao Zedong elevated the wall to the status of a national icon, starting the first modern attempts at preservation in the 1950's.
Hangwa does not go bad easily because it is very good at preservation.
Late in the 19th century, Jamestown became the focus of renewed historical interest and efforts at preservation.
For example, most cooking techniques are aimed at long-term preservation of food.