# Relationship history for MSHA mine 1502903

Current hierarchy: **Mullins Jack & Bill Jack Epling → Ben Coal Company → No 1 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

- **operator_operates_mine:** Compton & Compton Coal Company → No 1 Mine; 1950-01-01 to 1971-09-06; source msha-controller-operator-history
- **controller_controls_mine:** Compton Fred & Leonard → No 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Compton Fred & Leonard → Compton & Compton Coal Company; 1950-01-01 to 1971-09-06; source msha-controller-operator-history
- **operator_operates_mine:** Compton & Compton Coal Company → No 1 Mine; 1971-09-07 to 1974-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Christian Le Roy → No 1 Mine; 1971-09-07 to 1974-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Christian Le Roy → Compton & Compton Coal Company; 1971-09-07 to 1974-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Redwine Coal Company → No 1 Mine; 1974-04-01 to 1974-09-10; source msha-controller-operator-history
- **controller_controls_mine:** Redwine Phillip → No 1 Mine; 1974-04-01 to 1974-09-10; source msha-controller-operator-history
- **controller_controls_operator:** Redwine Phillip → Redwine Coal Company; 1974-04-01 to 1974-09-10; source msha-controller-operator-history
- **operator_operates_mine:** Board Fork Mining Company → No 1 Mine; 1974-09-11 to 1975-06-24; source msha-controller-operator-history
- **controller_controls_mine:** Childers Bob → No 1 Mine; 1974-09-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Childers Bob → Board Fork Mining Company; 1974-09-11 to 1975-06-24; source msha-controller-operator-history
- **operator_operates_mine:** Blackberry Creek Coal Company Inc → No 1 Mine; 1975-06-25 to 1977-06-08; source msha-controller-operator-history
- **controller_controls_mine:** Davis Gene → No 1 Mine; 1975-06-25 to 1977-06-08; source msha-controller-operator-history
- **controller_controls_operator:** Davis Gene → Blackberry Creek Coal Company Inc; 1975-06-25 to 1977-06-08; source msha-controller-operator-history
- **operator_operates_mine:** Ben Coal Company → No 1 Mine; 1977-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Jack & Bill Jack Epling → No 1 Mine; 1977-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Jack & Bill Jack Epling → Ben Coal Company; 1977-06-09 to current/open; source msha-controller-operator-history