| 日期/Date | 事件/Event | 地點/Location |
| 2011/12/6 | Wells Fargo 10th Annual Pipeline, MLP, and E and P, Services, and Utility Symposium | |
| 2011/12/6 | Wells Fargo 10th Annual Pipeline, MLP, and E and P, Services, and Utility Symposium | |
| 2011/12/6 | Wells Fargo 10th Annual Pipeline, MLP, and E and P, Services, and Utility Symposium | |
| 2011/12/6 | Wells Fargo 10th Annual Pipeline, MLP, and E and P, Services, and Utility Symposium | |
| 2011/12/6 | Wells Fargo 10th Annual Pipeline, MLP, and E and P, Services, and Utility Symposium | |
| 2011/12/6 | Wells Fargo 10th Annual Pipeline, MLP, and E and P, Services, and Utility Symposium | |
| 2011/12/6 | Wells Fargo 10th Annual Pipeline, MLP, and E and P, Services, and Utility Symposium | |
| 2011/12/6 | Wells Fargo 10th Annual Pipeline, MLP, and E and P, Services, and Utility Symposium | |
| 2011/12/6 | Wells Fargo 10th Annual Pipeline, MLP, and E and P, Services, and Utility Symposium | |