# Relationship history for MSHA mine 4002869

Current hierarchy: **Massey Energy Company → Tennessee Energy Corp → Mine #50**

- 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:** Higgins Daniel → Mine #50; 1984-01-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Higgins Coal Company Inc → Mine #50; 1984-12-01 to 1990-02-21; source msha-controller-operator-history
- **controller_controls_operator:** Higgins Daniel → Higgins Coal Company Inc; 1984-12-01 to 1990-02-21; source msha-controller-operator-history
- **controller_controls_mine:** Flynn Larry → Mine #50; 1987-07-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mosley Creek Coal Company → Mine #50; 1990-02-22 to 1991-08-15; source msha-controller-operator-history
- **controller_controls_mine:** Meeks Alfred Jr → Mine #50; 1990-02-22 to 1991-08-15; source msha-controller-operator-history
- **controller_controls_operator:** Meeks Alfred Jr → Mosley Creek Coal Company; 1990-02-22 to 1991-08-15; source msha-controller-operator-history
- **operator_operates_mine:** Lad Mining Inc → Mine #50; 1991-08-16 to 1992-05-07; source msha-controller-operator-history
- **controller_controls_operator:** Flynn Larry → Lad Mining Inc; 1991-08-16 to 1992-05-07; source msha-controller-operator-history
- **operator_operates_mine:** Tennessee Energy Corp → Mine #50; 1992-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Mine #50; 1992-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Tennessee Energy Corp; 1992-05-08 to current/open; source msha-controller-operator-history