This is because the environment did not allow for their preservation.
The company's records were given over the state for preservation.
The fund is used to buy development rights and open land for preservation.
But the others are simply asking for preservation of culture.
So far, no agreement has been reached for its preservation.
The museum was opened in 1993 for the study and preservation of the art collection.
This deal brought an end to a nearly 25 year battle for the preservation of the site.
Two organizations have taken up responsibility for the site's preservation.
The state has a trust fund to buy land for preservation.
"Our only hope for preservation is to be able to match them, as you say."