# Relationship history for MSHA mine 4401681

Current hierarchy: **Bennett W A Sr → W A Bennett Coal Co Inc → Mine No 14**

- 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

- **operator_operates_mine:** J & T Coal Co → Mine No 14; 1950-01-01 to 1973-10-01; source msha-controller-operator-history
- **controller_controls_mine:** J & T Coal Co → Mine No 14; 1950-01-01 to 1973-10-01; source msha-controller-operator-history
- **controller_controls_operator:** J & T Coal Co → J & T Coal Co; 1950-01-01 to 1973-10-01; source msha-controller-operator-history
- **controller_controls_mine:** Bennett W A Sr → Mine No 14; 1970-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & I Coal Co → Mine No 14; 1973-10-02 to 1975-02-28; source msha-controller-operator-history
- **controller_controls_mine:** C & I Coal Co → Mine No 14; 1973-10-02 to 1975-02-28; source msha-controller-operator-history
- **controller_controls_operator:** C & I Coal Co → C & I Coal Co; 1973-10-02 to 1975-02-28; source msha-controller-operator-history
- **operator_operates_mine:** W A Bennett Coal Co Inc → Mine No 14; 1975-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bennett W A Sr → W A Bennett Coal Co Inc; 1975-03-01 to current/open; source msha-controller-operator-history