Connecting the Dots -- The Bakken, North Dakota, USA

The dots:

• $14,000 per acre in southwestern North Dakota.
• "Seismic is very busy with four surveys and eight pending." (I thought we had seen the last of seismic two years ago.) -- Director's Cut, November 8, 2011.
• Through the grapevine: seismograph crews say they are looking for additional zones