The public inquiry into the case is to begin on June 20.
The final say will come from the public inquiry next month.
The public inquiry is expected to last a week, but a final decision won't be taken for several months.
Some of the families have called for a public inquiry.
She also decided that there should be no public inquiry.
Construction following a public inquiry is likely to begin in 1997.
All these - and many more - are questions for a public inquiry.
If they cannot agree, there will have to be a public inquiry.
If they cannot agree it will have to go to a public inquiry.
Others have proposed making the process more open to public inquiry.