An implosion is only limited by the area which can be used as a debris receptacle. I did a couple of takeoffs on this building but for the life of me, I can't remember how deep the basement is. The deeper the basement, of course, the more debris it can hold. Demolition debris ususally has an angle of repose of 2:1 but because of the steel construction this can vary a bit.
The Landmark Tower was the first highrise constructed in the US with an aluminum curtain wall. With aluminum scrap selling for .73/lb., somebody is loving life.