supposedly the largest and most modern feed manufacturing plant in all of the united states. there was still a lot of pride in it. >> over the years, hundreds of sioux falls residents worked there. but by 2000, the work moved on and that's when the building closed. that's when jeff saw an opportunity for his business. >> i'm a long time sioux falls resident. i'm dedicated to my community. i needed more space for my growing business and i started looking for available properties. >> the zip tower mill land on the east bank of the sioux river fits the bill. in 2005, jeff purchases the property, determined to demolish the 11-story landmark. >> we were looking at bids for exploding it and for bids for just taking it down the old-fashion way with the ball and chain. >> but the zip is one story taller than the highest wrecking crane in the state. so it must be taken down with explosives. jeff seizes the opportunity to raise funds for a cause dear to his heart.