# Relationship history for MSHA mine 3608064

Current hierarchy: **Vistra Energy → Luminant Mining Company LLC → NEPCO Co-Generation Facility**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Nepco Services Company → NEPCO Co-Generation Facility; 1988-12-01 to 1996-09-17; source msha-controller-operator-history
- **controller_controls_mine:** Reading Energy Group Inc → NEPCO Co-Generation Facility; 1988-12-01 to 1996-09-17; source msha-controller-operator-history
- **controller_controls_operator:** Reading Energy Group Inc → Nepco Services Company; 1988-12-01 to 1996-09-17; source msha-controller-operator-history
- **controller_controls_mine:** Suez Energy Generation NA → NEPCO Co-Generation Facility; 1996-09-01 to 2017-02-06; source msha-controller-operator-history
- **operator_operates_mine:** Northeastern Power Company → NEPCO Co-Generation Facility; 1996-09-18 to 2018-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Suez Energy Generation NA → Northeastern Power Company; 1996-09-18 to 2017-02-06; source msha-controller-operator-history
- **controller_controls_mine:** TXU → NEPCO Co-Generation Facility; 2007-08-31 to 2007-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Energy Future Holdings Corporation → NEPCO Co-Generation Facility; 2007-10-01 to 2016-10-03; source msha-controller-operator-history
- **controller_controls_mine:** Vistra Energy → NEPCO Co-Generation Facility; 2016-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dynegy Incorporated → NEPCO Co-Generation Facility; 2017-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dynegy Incorporated → Northeastern Power Company; 2017-02-07 to 2018-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Luminant Mining Company LLC → NEPCO Co-Generation Facility; 2018-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Energy Future Holdings Corporation → Luminant Mining Company LLC; 2018-08-01 to 2016-10-03; source msha-controller-operator-history
- **controller_controls_operator:** Vistra Energy → Luminant Mining Company LLC; 2018-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** TXU → Luminant Mining Company LLC; 2018-08-01 to 2007-09-30; source msha-controller-operator-history