Most of those scenes have not changed much over the years. A tweak here, a tweak there. I really could not tell you what specifically was there, and I worked at the Flooded Mine in '81 and '82 on a part time basis! I do think the dummies they use at FM in recent years have cartoonish look tothem. I miss the days when they had a more serious look, and when they used a a hidden film projector that shown moving and singing faces on a couple of the figures. The humidity from the water caused the projector to break down a lot. I can tell you the current scene in the tower area used to be where a fake rock slide with strobe light flashing on the foam rubber rocks used to be. A net caught the balls, and they were lifted by some device back to the top of the tower to be "dropped" on the next boat.