In late April, southern Missouri�s 440-megawatt Taum Sauk hydroelectric plant began generating power for the first time since December 2005, when an old dam gave way and more than a billion gallons of water rushed down the side of Proffitt Mountain through the popular Johnson�s Shut-Ins State Park below.
Power utility AmerenUE awarded a joint venture named Ozark Constructors LLC the contract to rebuild the pumped-storage reservoir�this time using roller-compacted concrete (RCC), which has become an industry standard for dam construction because it�s less prone to cracking.