Mack ® trucks power Graniterock fleet through tough emissions standards In 2010 Denny Mahler, operations manager for Graniterock Company's Transportation Division, had a problem. The California Air Resources Board (CARB) had announced the implementation of new and tighter emissions regulations, and Mahler knew his aging eet couldn't pass the new tests. Adding to Mahler's concerns was the country's then- struggling economy, which experienced a recession and industry slowdown. It was an inopportune time to be making a big investment so Mahler wanted to be sure to invest in the best equipment while doing what made sense economically for his company. A Mack rolls into town It may have been small consolation to Mahler at the time, but his dilemma was just the latest of many challenges Grani

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