Workers monitor water tanks at a Hess fracking site near Williston, North Dakota November 12, 2014. Falling oil prices have yet to spoil North Dakota's party, with billions of investment dollars still flowing for new wells and pipelines, apartments and shopping centers, a tacit bet the third energy boom in the state's history is just getting started. Picture taken November 12, 2014. REUTERS/Andrew Cullen (UNITED STATES - Tags: BUSINESS COMMODITIES ENERGY)