Tonya Fischer, a VP at One Southern Indiana, visits Alpha Mechanical’s Scott Pate at the Business Boost event. A packed house, great location, more than 100 exhibitors, plenty of prizes, and food. Those are the ingredients of a successful business building event. Throw in some gorgeous weather provided by Mother Nature, and the scene couldn’t have been better. And that was exactly what happened on a beautiful fall day at One Southern Indiana’s Business Boost, the business-to-business expo for Clark…