# Relationship history for MSHA mine 4002804

Current hierarchy: **Massey Energy Company → Tennessee Energy Corp → Mine No 39**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Massey Energy Company → Mine No 39; 1976-09-01 to 2011-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Tennessee Consolidated Coal Company → Mine No 39; 1982-09-01 to 1987-09-23; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Tennessee Consolidated Coal Company; 1982-09-01 to 1987-09-23; source msha-controller-operator-history
- **controller_controls_mine:** Patton John Anthony → Mine No 39; 1987-08-26 to 1991-10-09; source msha-controller-operator-history
- **operator_operates_mine:** Davis Mining Inc → Mine No 39; 1987-09-24 to 1988-08-21; source msha-controller-operator-history
- **controller_controls_mine:** Davis Clarence E → Mine No 39; 1987-09-24 to 1988-08-21; source msha-controller-operator-history
- **controller_controls_operator:** Davis Clarence E → Davis Mining Inc; 1987-09-24 to 1988-08-21; source msha-controller-operator-history
- **operator_operates_mine:** A & P Mining Company Inc → Mine No 39; 1988-08-22 to 1991-10-09; source msha-controller-operator-history
- **controller_controls_operator:** Patton John Anthony → A & P Mining Company Inc; 1988-08-22 to 1991-10-09; source msha-controller-operator-history
- **operator_operates_mine:** Jen Inc → Mine No 39; 1991-10-10 to 1993-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Nunley James Earl → Mine No 39; 1991-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nunley James Earl → Jen Inc; 1991-10-10 to 1993-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Mine No 39; 1992-05-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tennessee Energy Corp → Mine No 39; 1993-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Tennessee Energy Corp; 1993-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Mine No 39; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Tennessee Consolidated Coal Company; 2011-06-01 to 1987-09-23; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → Mine No 39; 2016-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Tennessee Consolidated Coal Company; 2016-07-26 to 1987-09-23; source msha-controller-operator-history