# Relationship history for MSHA mine 1511724

Current hierarchy: **Inspiration Resources Corporation → Bailey Mining Company → 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

- **controller_controls_mine:** Bailey Vernon E → No 1 Tipple; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bailey Mining Company Inc → No 1 Tipple; 1978-12-01 to 1982-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Vernon E → Bailey Mining Company Inc; 1978-12-01 to 1982-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Bailey Mining Company → No 1 Tipple; 1982-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Inspiration Resources Corporation → No 1 Tipple; 1982-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Inspiration Resources Corporation → Bailey Mining Company; 1982-02-01 to current/open; source msha-controller-operator-history