# Relationship history for MSHA mine 1519003

Current hierarchy: **Jerrold  Tao → P & C Mining Inc → 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Paul C  Hitchcock → No. 2; 2005-04-21 to 2009-05-31; source msha-controller-operator-history
- **operator_operates_mine:** P & C Mining Inc → No. 2; 2006-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul C  Hitchcock → P & C Mining Inc; 2006-06-06 to 2009-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Jerrold  Tao → No. 2; 2009-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerrold  Tao → P & C Mining Inc; 2009-06-01 to current/open; source msha-controller-operator-history