here is a simple charge setup to destroy a reinforced concrete column (a SEAL I know told me it was pretty simple to rig, even in air). The charges involved are attached to the column, without providing further detail.
At the very least, Clinton capitalized on the bombing, turning it around to make all gun owners look like they were the bad guys, shutting down the effort to repeal the AWB, and claims that it 'was done in retribution for Waco' not only muzzled many over Waco, but seemed to take the steam out of the already scheduled Congressional hearings as well.
Losers: gunowners, conservatives, people who objected to the Waco holocaust.
Winners: The Clinton Administration, anti-gunners, the FBI and the ATF.
If there wasn't some sort of conspiracy, there was plenty of reason to suspect one.
The only other crime scene I can think of so rapidly bulldozed was at Waco.
“here”=There