# Relationship history for MSHA mine 4403153

Current hierarchy: **Jones Harold A → H & R Coals Inc → No 1 Mine**

- 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:** M & S Coal Company → No 1 Mine; 1972-01-01 to 1973-05-10; source msha-controller-operator-history
- **controller_controls_mine:** M & S Coal Co → No 1 Mine; 1972-01-01 to 1973-05-10; source msha-controller-operator-history
- **controller_controls_operator:** M & S Coal Co → M & S Coal Company; 1972-01-01 to 1973-05-10; source msha-controller-operator-history
- **operator_operates_mine:** Huff Coal Company → No 1 Mine; 1973-05-11 to 1974-02-15; source msha-controller-operator-history
- **controller_controls_mine:** Huff Coal Co → No 1 Mine; 1973-05-11 to 1974-02-15; source msha-controller-operator-history
- **controller_controls_operator:** Huff Coal Co → Huff Coal Company; 1973-05-11 to 1974-02-15; source msha-controller-operator-history
- **operator_operates_mine:** H & R Coals Inc → No 1 Mine; 1974-02-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jones Harold A → No 1 Mine; 1974-02-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jones Harold A → H & R Coals Inc; 1974-02-16 to current/open; source msha-controller-operator-history