According to an article published in the Dallas Morning News on September 23, 2009, the City of Irving granted a demolition contract to Weir Brothers Inc., a local Dallas based company, for the demolition and implosion of the stadium.
The City of Irving and Kraft Foods provided details on December 31, 2009 of their sponsorship deal for the building’s implosion — including a national essay contest with the winner getting to pull the trigger that finishes off the iconic stadium. The city council unanimously approved the sponsorship deal . Details on the essay contest, part of Kraft’s “Cheddar Explosion” promotional campaign, will be announced at a later date. The implosion will take place April 11, 2010.
Sports - Football - Pro 
The City of Irving and Kraft Foods provided details on December 31, 2009 of their sponsorship deal for the building’s implosion — including a national essay contest with the winner getting to pull the trigger that finishes off the iconic stadium. The city council unanimously approved the sponsorship deal . Details on the essay contest, part of Kraft’s “Cheddar Explosion” promotional campaign, will be announced at a later date. The implosion will take place April 11, 2010.
http://en.wikipedia.org/wiki/Texas_Stadium#Demolition
http://www.dallascowboys.com/farewell/Texas_Stadium_Implosion.cfm