Pumper was born 30 years ago this month after pumping contractor Pete Lawonn of Three Lakes, Wis., had a spare 2,000-gallon vacuum tank he needed to sell, but no effective way to market it. Word-of-mouth and newspaper advertising didn’t seem like good ways to reach the network of contractors who might be interested in his tank.Then the late John DiVall, of the company then known as Jay’s Waste Equipment, gave Lawonn an idea.“John said, ‘You know, what we really need is a trade journal for this industry,’ ” Lawonn recalls. “Basically, he put the bug in my ear to start
