# Relationship history for MSHA mine 2601595

Current hierarchy: **Secret Pass Gold Inc → MIN-AD Inc → MIN-AD Inc**

- 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:** R C  Whitson → MIN-AD Inc; 1979-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** K W Minerals Corp → MIN-AD Inc; 1980-01-01 to 1984-02-28; source msha-controller-operator-history
- **controller_controls_mine:** K W  Snyder → MIN-AD Inc; 1980-01-01 to 1984-02-28; source msha-controller-operator-history
- **controller_controls_operator:** K W  Snyder → K W Minerals Corp; 1980-01-01 to 1984-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Min-Ad Inc → MIN-AD Inc; 1984-02-29 to 1999-09-09; source msha-controller-operator-history
- **controller_controls_operator:** R C  Whitson → Min-Ad Inc; 1984-02-29 to 1999-09-09; source msha-controller-operator-history
- **operator_operates_mine:** MIN-AD Inc → MIN-AD Inc; 1999-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Secret Pass Gold Inc → MIN-AD Inc; 1999-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Secret Pass Gold Inc → MIN-AD Inc; 1999-09-10 to current/open; source msha-controller-operator-history