# Relationship history for MSHA mine 0404395

Current hierarchy: **Rio Tinto Group → Western Source → REDHILL 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

- **controller_controls_mine:** Johnson & Johnson → REDHILL MINE; 1950-01-01 to 1989-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Western Source Inc → REDHILL MINE; 1980-03-01 to 1989-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Johnson & Johnson → Western Source Inc; 1980-03-01 to 1989-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Western Source → REDHILL MINE; 1990-01-01 to 1992-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Cyprus Amax Minerals Company → REDHILL MINE; 1990-01-01 to 1992-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Cyprus Amax Minerals Company → Western Source; 1990-01-01 to 1992-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Western Source → REDHILL MINE; 1992-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rio Tinto Group → REDHILL MINE; 1992-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rio Tinto Group → Western Source; 1992-07-01 to current/open; source msha-controller-operator-history