It took several tries and a bit of a scare to take down the second building from the former Imperial Sugar factory and refinery off Highway 90A in Sugar Land Sunday. As shown in more than a dozen YouTube videos, the metal bin building collapsed after the first blasts of dynamite shortly after 7 am, as planned. But the metal furnace house, directly adjacent to the brick char house, didn’t budge; getting it out of there turned out to be a little trickier. A second series of blasts (shown in the video above), set around 7:45, produced . . . well, not much. Then, maybe 40 minutes later, after most of the crowds had left and workers had gone inside the building to try to figure out what was wrong, and when the remaining onlookers least expected it, there was this frightening scene: