This line of inquiry is getting muddier.

Turner Construction has been credited with CD of the King Dome. However the actual demolitions were subcontracted to other firms.

"First & Goal, Paul Allen’s Holding Company, and the Construction Manager, Turner Construction Company (TCC), retaining the services of Loizeaux Group International to consider the demolition options for the removal of the Kingdome, the world’s largest thin-shelled concrete dome, covering a 660’ clear span. After more than a year and a half of structural analysis, investigation of site conditions/adjacent improvements to remain and consideration of all of the political and public relations aspects of the project, an implosion solution was considered to be the best and safest means of demolishing the structure.

TCC negotiated with Controlled Demolition, Inc. (CDI) to design the implosion of the Kingdome in a fashion which would mitigate the demolition’s impact on the community while supporting the fast-track construction of the replacement stadium for the Seattle Seahawks. CDI spent 4-½ months designing the demolition and working with TCC to generate implosion preparation and demolition specifications which TCC put out to competitive bid to a short-listed group of demolition contractors. Ultimately, a $9 million demolition contract was awarded to Aman Environmental Construction, Inc. (Aman) of Oakland, California who acted as the Prime Demolition Contractor with CDI’s implosion contract with TCC being assigned to them."

http://www.controlled-demolition.com/default.asp?reqLocId=7&reqItemId=20...

This means the CD skills were not in house, even though TC has the project management part. This makes me less confident, though not totally off the possibility that TC was involved. More digging and maybe a whistle blower required to nail this thing.