# Relationship history for MSHA mine 0101789

Current hierarchy: **Jimmie R  Ryan → Boone Resources Inc → Boone 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:** Usx Corp → Boone No 2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** United States Steel Mining Company Inc → Boone No 2; 1977-07-01 to 1995-09-10; source msha-controller-operator-history
- **controller_controls_operator:** Usx Corp → United States Steel Mining Company Inc; 1977-07-01 to 1995-09-10; source msha-controller-operator-history
- **controller_controls_mine:** Jimmie R  Ryan et al → Boone No 2; 1992-08-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Boone Resources Inc → Boone No 2; 1995-09-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jimmie R  Ryan et al → Boone Resources Inc; 1995-09-11 to current/open; source msha-controller-operator-history