# Relationship history for MSHA mine 4404999

Current hierarchy: **Stanley  Ingram → Hargreaves Mitchell 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

- **controller_controls_mine:** Mitchell Harold L → No 1 Tipple; 1976-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mitchell Coal Company Inc → No 1 Tipple; 1978-03-01 to 1980-01-01; source msha-controller-operator-history
- **controller_controls_operator:** Mitchell Harold L → Mitchell Coal Company Inc; 1978-03-01 to 1980-01-01; source msha-controller-operator-history
- **operator_operates_mine:** Hargreaves Mitchell Inc → No 1 Tipple; 1980-01-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stanley  Ingram → No 1 Tipple; 1980-01-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stanley  Ingram → Hargreaves Mitchell Inc; 1980-01-02 to current/open; source msha-controller-operator-history