# Relationship history for MSHA mine 1506392

Current hierarchy: **Labadie Ray L → Labadie Coal Company Inc → No 1 Tipple**

- 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:** Osborne Mining Corp → No 1 Tipple; 1950-01-01 to 1977-01-05; source msha-controller-operator-history
- **controller_controls_mine:** Osborne Jack & William L Jr → No 1 Tipple; 1950-01-01 to 1977-01-05; source msha-controller-operator-history
- **controller_controls_operator:** Osborne Jack & William L Jr → Osborne Mining Corp; 1950-01-01 to 1977-01-05; source msha-controller-operator-history
- **operator_operates_mine:** Williamson Coal Corp → No 1 Tipple; 1977-01-06 to 1977-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Conway J J → No 1 Tipple; 1977-01-06 to 1977-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Conway J J → Williamson Coal Corp; 1977-01-06 to 1977-05-08; source msha-controller-operator-history
- **operator_operates_mine:** Labadie Coal Company Inc → No 1 Tipple; 1977-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Labadie Ray L → No 1 Tipple; 1977-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Labadie Ray L → Labadie Coal Company Inc; 1977-05-09 to current/open; source msha-controller-operator-history