National Asphalt Paving Association (NAPA) Diamond Achievement Commendation Award "For Excellence in Hot Mix Asphalt Plant/Site Operation" Presented to Heartland Asphalt, Inc. Riverview Plant Mason City, IA 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004 awards & honors November 10, 2017 Chris Jessen Comments are closed