Data points:
- Exxon Mobil, ConocoPhillips, BP, and TransCanada
- Alaska's North Slope
- $45 billion to $65 billion
- 800-mile pipeline
- capacity: 3 to 3.5 billion cubic feet of natural gas
- gas will be produced on the North Slope, near Prudhoe Bay
- liquefaction plant: 400 - 600 acre site; process 15 million to 18 million tons of gas/year