# Relationship history for MSHA mine 3603375

Current hierarchy: **Kurt E  Kerry → Western Hickory Coal Company Inc → Western Hickory Strip**

- 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:** Western Hickory Coal Company Inc → Western Hickory Strip; 1950-01-01 to 1977-09-06; source msha-controller-operator-history
- **controller_controls_mine:** Fenati H M → Western Hickory Strip; 1950-01-01 to 1977-09-06; source msha-controller-operator-history
- **controller_controls_operator:** Fenati H M → Western Hickory Coal Company Inc; 1950-01-01 to 1977-09-06; source msha-controller-operator-history
- **operator_operates_mine:** Western Hickory Coal Company Inc → Western Hickory Strip; 1977-09-07 to 1978-12-19; source msha-controller-operator-history
- **controller_controls_mine:** List Harry W → Western Hickory Strip; 1977-09-07 to 1978-12-19; source msha-controller-operator-history
- **controller_controls_operator:** List Harry W → Western Hickory Coal Company Inc; 1977-09-07 to 1978-12-19; source msha-controller-operator-history
- **operator_operates_mine:** Western Hickory Coal Company Inc → Western Hickory Strip; 1978-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kurt E  Kerry → Western Hickory Strip; 1978-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kurt E  Kerry → Western Hickory Coal Company Inc; 1978-12-20 to current/open; source msha-controller-operator-history