# Relationship history for MSHA mine 4605279

Current hierarchy: **William  Calloway → Liberty Bell Fuel Inc → Aa Mine**

- 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:** Pittston Company → Aa Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ranger Fuel Corp → Aa Mine; 1976-09-01 to 1978-10-11; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Ranger Fuel Corp; 1976-09-01 to 1978-10-11; source msha-controller-operator-history
- **operator_operates_mine:** White Eagle Coal Company Inc → Aa Mine; 1978-10-12 to 1980-07-06; source msha-controller-operator-history
- **controller_controls_mine:** Wood Lonnie J → Aa Mine; 1978-10-12 to 1980-07-06; source msha-controller-operator-history
- **controller_controls_operator:** Wood Lonnie J → White Eagle Coal Company Inc; 1978-10-12 to 1980-07-06; source msha-controller-operator-history
- **controller_controls_mine:** Pack Bill → Aa Mine; 1979-01-01 to 1983-07-06; source msha-controller-operator-history
- **operator_operates_mine:** Bengus Coal Company Inc → Aa Mine; 1980-07-07 to 1981-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Mc Clung Tom → Aa Mine; 1980-07-07 to 1981-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Mc Clung Tom → Bengus Coal Company Inc; 1980-07-07 to 1981-03-14; source msha-controller-operator-history
- **controller_controls_mine:** William  Calloway → Aa Mine; 1981-02-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Triple R Resources Ltd → Aa Mine; 1981-03-15 to 1981-08-25; source msha-controller-operator-history
- **controller_controls_mine:** Jackson David E → Aa Mine; 1981-03-15 to 1981-08-25; source msha-controller-operator-history
- **controller_controls_operator:** Jackson David E → Triple R Resources Ltd; 1981-03-15 to 1981-08-25; source msha-controller-operator-history
- **operator_operates_mine:** Triple R Resources Ltd → Aa Mine; 1981-08-26 to 1982-02-21; source msha-controller-operator-history
- **controller_controls_mine:** Ellison Vern → Aa Mine; 1981-08-26 to 1982-02-21; source msha-controller-operator-history
- **controller_controls_operator:** Ellison Vern → Triple R Resources Ltd; 1981-08-26 to 1982-02-21; source msha-controller-operator-history
- **operator_operates_mine:** War Eagle Coals Inc → Aa Mine; 1982-02-22 to 1983-04-04; source msha-controller-operator-history
- **controller_controls_operator:** Pack Bill → War Eagle Coals Inc; 1982-02-22 to 1983-04-04; source msha-controller-operator-history
- **operator_operates_mine:** Hampton Coal Company Inc → Aa Mine; 1983-04-05 to 1984-06-18; source msha-controller-operator-history
- **controller_controls_mine:** Clark Randy H → Aa Mine; 1983-04-05 to 1984-06-18; source msha-controller-operator-history
- **controller_controls_operator:** Clark Randy H → Hampton Coal Company Inc; 1983-04-05 to 1984-06-18; source msha-controller-operator-history
- **operator_operates_mine:** Liberty Bell Fuel Inc → Aa Mine; 1984-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Calloway → Liberty Bell Fuel Inc; 1984-06-19 to current/open; source msha-controller-operator-history