# Relationship history for MSHA mine 4404040

Current hierarchy: **Theodore  Yates → Har-Lee Coal Company Inc → No 5**

- 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

- **operator_operates_mine:** Critical Fork Coal Corp → No 5; 1975-03-21 to 1981-04-09; source msha-controller-operator-history
- **controller_controls_mine:** Mc Clelland Herbert Jim & C J Chaffin → No 5; 1975-03-21 to 1981-04-09; source msha-controller-operator-history
- **controller_controls_operator:** Mc Clelland Herbert Jim & C J Chaffin → Critical Fork Coal Corp; 1975-03-21 to 1981-04-09; source msha-controller-operator-history
- **controller_controls_mine:** Elkins William R-Hursel H Et Al → No 5; 1980-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Elkins Energy Corp → No 5; 1981-04-10 to 1987-02-17; source msha-controller-operator-history
- **controller_controls_operator:** Elkins William R-Hursel H Et Al → Elkins Energy Corp; 1981-04-10 to 1987-02-17; source msha-controller-operator-history
- **controller_controls_mine:** Wesley D.  Burke et al → No 5; 1983-05-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Plowboy Coal Company Inc → No 5; 1987-02-18 to 1993-06-27; source msha-controller-operator-history
- **controller_controls_operator:** Wesley D.  Burke et al → Plowboy Coal Company Inc; 1987-02-18 to 1993-06-27; source msha-controller-operator-history
- **controller_controls_mine:** Theodore  Yates et al → No 5; 1989-02-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Har-Lee Coal Company Inc → No 5; 1993-06-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Theodore  Yates et al → Har-Lee Coal Company Inc; 1993-06-28 to current/open; source msha-controller-operator-history