# Relationship history for MSHA mine 4606473

Current hierarchy: **Kenneth R  Calloway → Dale Coal Inc → Clinton #3a**

- 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:** William  Calloway → Clinton #3a; 1981-02-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Henry Paul  Kizer et al → Clinton #3a; 1981-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Barrett Fuel Corp → Clinton #3a; 1982-01-01 to 1985-02-04; source msha-controller-operator-history
- **controller_controls_operator:** Henry Paul  Kizer et al → Barrett Fuel Corp; 1982-01-01 to 1985-02-04; source msha-controller-operator-history
- **operator_operates_mine:** Wise Mining Inc → Clinton #3a; 1985-02-05 to 1986-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Cook William Larry → Clinton #3a; 1985-02-05 to 1986-01-01; source msha-controller-operator-history
- **controller_controls_operator:** Cook William Larry → Wise Mining Inc; 1985-02-05 to 1986-01-01; source msha-controller-operator-history
- **operator_operates_mine:** Liberty Bell Fuel Inc → Clinton #3a; 1986-01-02 to 1989-04-02; source msha-controller-operator-history
- **controller_controls_operator:** William  Calloway → Liberty Bell Fuel Inc; 1986-01-02 to 1989-04-02; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth R  Calloway → Clinton #3a; 1988-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dale Coal Inc → Clinton #3a; 1989-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth R  Calloway → Dale Coal Inc; 1989-04-03 to current/open; source msha-controller-operator-history