| 日期/Date | 事件/Event | 地點/Location |
| 2010/8/18 | OKE, OKS, SD at Tuohy Brothers Natural Gas Infrastructure and Production Conference | |
| 2010/8/18 | OKE, OKS, SD at Tuohy Brothers Natural Gas Infrastructure and Production Conference | |
| 2010/8/18 | OKE, OKS, SD at Tuohy Brothers Natural Gas Infrastructure and Production Conference | |
| 2010/8/18 | OKE, OKS, SD at Tuohy Brothers Natural Gas Infrastructure and Production Conference | |