When the Taum Sauk Upper Reservoir Dam failed in 2005, the decision was made to replace the complete reservoir. Over 22 months, 2.8 million cubic yards of RCC and 0.3 million cubic yards of CVC were placed by Ozark Constructors, a venture partnership between Fred Weber and ASI Constructors. The reservoir is located in Lesterville, Missouri, USA in the St. Francois mountain region of the Ozark Mountains, and reopened in 2010, with a storage capacity of over 1 billion gallons of water.

Maxon Agitors were used on the project to haul and place Roller Compacted Concrete (RCC), Conventional Vibratory Concrete (CVC) and grout enriched RCC for all phases of construction. The unique design of the Agitor offers easy and efficient loading from any concrete plant, or conveyor. The hoisting body allows for fast discharge, up to 12 cubic yards (9 cubic meters) in less than 30 seconds, and the patented chutes provide direct placement of RCC/CVC to exacting locations.