# Relationship history for MSHA mine 1507223

Current hierarchy: **Labadie Ray L → Labadie Coal Company Inc → 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:** Joor Mining Corp → No 1 Mine; 1974-07-19 to 1976-11-03; source msha-controller-operator-history
- **controller_controls_mine:** Osborne Jack & William L Jr → No 1 Mine; 1974-07-19 to 1976-11-03; source msha-controller-operator-history
- **controller_controls_operator:** Osborne Jack & William L Jr → Joor Mining Corp; 1974-07-19 to 1976-11-03; source msha-controller-operator-history
- **operator_operates_mine:** Artrip Coal Company Inc → No 1 Mine; 1976-11-04 to 1977-03-09; source msha-controller-operator-history
- **controller_controls_mine:** Artrip Coal Company Inc → No 1 Mine; 1976-11-04 to 1977-03-09; source msha-controller-operator-history
- **controller_controls_operator:** Artrip Coal Company Inc → Artrip Coal Company Inc; 1976-11-04 to 1977-03-09; source msha-controller-operator-history
- **operator_operates_mine:** Southern Diversified Corp → No 1 Mine; 1977-03-10 to 1978-04-19; source msha-controller-operator-history
- **controller_controls_mine:** Messerian John → No 1 Mine; 1977-03-10 to 1978-04-19; source msha-controller-operator-history
- **controller_controls_operator:** Messerian John → Southern Diversified Corp; 1977-03-10 to 1978-04-19; source msha-controller-operator-history
- **controller_controls_mine:** Labadie Ray L → No 1 Mine; 1977-05-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Labadie Coal Company Inc → No 1 Mine; 1978-04-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Labadie Ray L → Labadie Coal Company Inc; 1978-04-20 to current/open; source msha-controller-operator-history