# Relationship history for MSHA mine 4605248

Current hierarchy: **Blankenship Rodney → Blankenship Coal Mining Company → Warren Eagle Mine No 3**

- 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:** Robert E  Kamm et al → Warren Eagle Mine No 3; 1973-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Warren Eagle Coal Company → Warren Eagle Mine No 3; 1976-08-11 to 1981-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Robert E  Kamm et al → Warren Eagle Coal Company; 1976-08-11 to 1981-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Terry  Seelinger et al → Warren Eagle Coal Company; 1976-08-11 to 1981-11-30; source msha-controller-operator-history
- **controller_controls_mine:** M A Hanna Company et al → Warren Eagle Mine No 3; 1980-10-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Westridge Coal Company Inc → Warren Eagle Mine No 3; 1981-12-01 to 1983-01-24; source msha-controller-operator-history
- **controller_controls_mine:** Suffridge James S → Warren Eagle Mine No 3; 1981-12-01 to 1991-10-14; source msha-controller-operator-history
- **controller_controls_operator:** Suffridge James S → Westridge Coal Company Inc; 1981-12-01 to 1983-01-24; source msha-controller-operator-history
- **operator_operates_mine:** Terry Eagle Coal Company-Limited Partnership → Warren Eagle Mine No 3; 1983-01-25 to 1984-05-13; source msha-controller-operator-history
- **controller_controls_operator:** M A Hanna Company et al → Terry Eagle Coal Company-Limited Partnership; 1983-01-25 to 1984-05-13; source msha-controller-operator-history
- **controller_controls_operator:** W R Grace Company et al → Terry Eagle Coal Company-Limited Partnership; 1983-01-25 to 1984-05-13; source msha-controller-operator-history
- **operator_operates_mine:** J & B Contractors → Warren Eagle Mine No 3; 1984-05-14 to 1987-02-03; source msha-controller-operator-history
- **controller_controls_mine:** Cogar B C & Jack Hickman → Warren Eagle Mine No 3; 1984-05-14 to 1987-02-03; source msha-controller-operator-history
- **controller_controls_operator:** Cogar B C & Jack Hickman → J & B Contractors; 1984-05-14 to 1987-02-03; source msha-controller-operator-history
- **operator_operates_mine:** Blankenship Coal Mining Company → Warren Eagle Mine No 3; 1987-02-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Blankenship Rodney → Warren Eagle Mine No 3; 1987-02-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blankenship Rodney → Blankenship Coal Mining Company; 1987-02-04 to current/open; source msha-controller-operator-history