# Relationship history for MSHA mine 4605959

Current hierarchy: **Cook Herbert T → Blackfoot Coal Corp → Kanawha #2**

- 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:** Boggs Harry C → Kanawha #2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Orlando Coals Inc → Kanawha #2; 1979-01-01 to 1980-11-17; source msha-controller-operator-history
- **controller_controls_operator:** Boggs Harry C → Orlando Coals Inc; 1979-01-01 to 1980-11-17; source msha-controller-operator-history
- **operator_operates_mine:** John Blair Mining Inc → Kanawha #2; 1980-11-18 to 1980-12-22; source msha-controller-operator-history
- **controller_controls_mine:** Blair John → Kanawha #2; 1980-11-18 to 1981-03-04; source msha-controller-operator-history
- **controller_controls_operator:** Blair John → John Blair Mining Inc; 1980-11-18 to 1980-12-22; source msha-controller-operator-history
- **operator_operates_mine:** Orlando Coals Inc → Kanawha #2; 1980-12-23 to 1982-03-26; source msha-controller-operator-history
- **controller_controls_operator:** Boggs Harry C → Orlando Coals Inc; 1980-12-23 to 1982-03-26; source msha-controller-operator-history
- **operator_operates_mine:** Blackfoot Coal Corp → Kanawha #2; 1982-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cook Herbert T → Kanawha #2; 1982-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cook Herbert T → Blackfoot Coal Corp; 1982-03-27 to current/open; source msha-controller-operator-history