This test shot was on an exterior column near the southwest corner of the building. The explosives are loaded into the column, then the column is wrapped with a wire cage to help contain the exploding chunks of concrete. That is wrapped with a tarp to further contain flying debris.

BOOM!!! The test shot is a success. An interior column on the opposite side of the building was also shot at the same time.

After the test shot, the blaster returns to the building to examine the results. The test helps determine several things; to ensure the charges are powerful enough to cut the column, and to see how well flying debris is contained. These shots were a success, and let the blaster know what, if any, adjustments need to be made for the actual implosion.

This interior column in the southeast corner of the building was also shot. In this picture, the rebar has been cut out of the column after the test.