Foto: Ropná horečka v Severní Dakotě

3/30 Přehled fotografií
An oil drilling rig operates near homes, farm fields and the Missouri River outside Williston, North Dakota, October 19, 2012. Thousands of people have flooded into North Dakota to work in state's oil drilling boom. Picture taken October 19, 2012. REUTERS/Jim Urquhart (UNITED STATES - Tags: ENERGY ENVIRONMENT BUSINESS EMPLOYMENT) Published: Říj. 22, 2012, 1:40 odp.
V členitém terénu Severní Dakoty se nalézá mnoho vrtných jednotek. | Foto: Reuters