# Relationship history for MSHA mine 1513414

Current hierarchy: **James H  Booth → Dukane Energy Inc → 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

- **controller_controls_mine:** Francis Robert L → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Barbara Kay Coal Corp → No 1; 1982-03-01 to 1989-12-11; source msha-controller-operator-history
- **controller_controls_operator:** Francis Robert L → Barbara Kay Coal Corp; 1982-03-01 to 1989-12-11; source msha-controller-operator-history
- **operator_operates_mine:** Dukane Energy Inc → No 1; 1989-12-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James H  Booth et al → No 1; 1989-12-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James H  Booth et al → Dukane Energy Inc; 1989-12-12 to current/open; source msha-controller-operator-history