The site was deemed safe when construction started in 1968.
Officials said that operations would begin once the area was deemed safe for workers.
But it will still be several years before the land abdicated in 1986 is deemed safe for use.
Drilling in the area was deemed safe due to these results.
The western spans, built 17 years later, were still deemed safe to use.
More than 14 hours passed before it was deemed safe enough to surface.
They offer some interesting projects, generally in areas which are deemed safe and have a lot of cultural attractions.
These days, many areas of the zone are deemed safe enough for tourists.
What was considered dangerous a year ago is now deemed safe and legal.
The building is certainly deemed safe for those who seek treatment there, including the elderly and children.