# Relationship history for MSHA mine 4607869

Current hierarchy: **Usx Corp → U S Steel Mining Company Llc → Alpheus Refuse Area**

- 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 → Alpheus Refuse Area; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charles  Adkins → Alpheus Refuse Area; 1989-06-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** West Virginia-Tennessee Coal Sales Inc → Alpheus Refuse Area; 1990-04-01 to 1993-05-18; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Adkins → West Virginia-Tennessee Coal Sales Inc; 1990-04-01 to 1993-05-18; source msha-controller-operator-history
- **operator_operates_mine:** West Virginia-Tennessee Coal Sales Inc → Alpheus Refuse Area; 1993-05-19 to 1994-03-01; source msha-controller-operator-history
- **controller_controls_mine:** Race James Q → Alpheus Refuse Area; 1993-05-19 to 1994-03-01; source msha-controller-operator-history
- **controller_controls_operator:** Race James Q → West Virginia-Tennessee Coal Sales Inc; 1993-05-19 to 1994-03-01; source msha-controller-operator-history
- **operator_operates_mine:** U S Steel Mining Company Llc → Alpheus Refuse Area; 1994-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Usx Corp → U S Steel Mining Company Llc; 1994-03-02 to current/open; source msha-controller-operator-history