# Relationship history for MSHA mine 4607935

Current hierarchy: **Howerton James V → H & H Coals Inc → Mine No 2**

- 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:** Howerton James V → Mine No 2; 1990-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Little Eagle Inc → Mine No 2; 1990-09-01 to 1992-01-09; source msha-controller-operator-history
- **controller_controls_mine:** Click Cecil & Larry M Leffew → Mine No 2; 1990-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Click Cecil & Larry M Leffew → Little Eagle Inc; 1990-09-01 to 1992-01-09; source msha-controller-operator-history
- **operator_operates_mine:** H & H Coals Inc → Mine No 2; 1992-01-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Howerton James V → H & H Coals Inc; 1992-01-10 to current/open; source msha-controller-operator-history