# Relationship history for MSHA mine 1508801

Current hierarchy: **Jordan Ted → Big J Coal Company Inc → No 24 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:** Champion International Corporation → No 24 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Twenty Four Coal Company Inc → No 24 Mine; 1975-09-05 to 1979-07-24; source msha-controller-operator-history
- **controller_controls_mine:** Charles  Hunter → No 24 Mine; 1975-09-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Hunter → Twenty Four Coal Company Inc; 1975-09-05 to 1979-07-24; source msha-controller-operator-history
- **operator_operates_mine:** Harlan No 4 Coal Company → No 24 Mine; 1979-07-25 to 1981-09-21; source msha-controller-operator-history
- **controller_controls_operator:** Champion International Corporation → Harlan No 4 Coal Company; 1979-07-25 to 1981-09-21; source msha-controller-operator-history
- **controller_controls_mine:** Benjamin R.  Bennett → No 24 Mine; 1979-11-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rb Coal Company Inc → No 24 Mine; 1981-09-22 to 1981-11-16; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin R.  Bennett → Rb Coal Company Inc; 1981-09-22 to 1981-11-16; source msha-controller-operator-history
- **operator_operates_mine:** Big J Coal Company Inc → No 24 Mine; 1981-11-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jordan Ted → No 24 Mine; 1981-11-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jordan Ted → Big J Coal Company Inc; 1981-11-17 to current/open; source msha-controller-operator-history