The preliminary design of the Mi-54 was completed in 1993.
The preliminary design was presented to the public in May 2009.
The competition for the preliminary design of the bridge was held in 2004.
A preliminary design will probably be reviewed in the next two months, he said.
The preliminary design goes before several community boards this week.
Further details about the preliminary design emerged two weeks later.
We've been doing preliminary design for quite some time now.
The agreement on the preliminary design was to be signed in December 2010.
By the autumn of 2011 volunteers started working on the preliminary design.
The preliminary designs were released to the public on September 19, 2009.
