# Relationship history for MSHA mine 4405629

Current hierarchy: **David  Clevinger; Everett  Delaney → Eastern Energy Corp → Mine No 1**

- 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:** Eastern Energy Corp → Mine No 1; 1981-04-01 to 1986-06-17; source msha-controller-operator-history
- **controller_controls_mine:** Everett  Delaney et al → Mine No 1; 1981-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Everett  Delaney et al → Eastern Energy Corp; 1981-04-01 to 1986-06-17; source msha-controller-operator-history
- **controller_controls_operator:** David  Clevinger et al → Eastern Energy Corp; 1981-04-01 to 1986-06-17; source msha-controller-operator-history
- **controller_controls_mine:** Coy  Taylor et al → Mine No 1; 1984-10-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Chad Coal Corp → Mine No 1; 1986-06-18 to 1988-03-27; source msha-controller-operator-history
- **controller_controls_operator:** Coy  Taylor et al → Chad Coal Corp; 1986-06-18 to 1988-03-27; source msha-controller-operator-history
- **controller_controls_operator:** James  Taylor et al → Chad Coal Corp; 1986-06-18 to 1988-03-27; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Energy Corp → Mine No 1; 1988-03-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Clevinger et al → Eastern Energy Corp; 1988-03-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Everett  Delaney et al → Eastern Energy Corp; 1988-03-28 to current/open; source msha-controller-operator-history