# Relationship history for MSHA mine 1512880

Current hierarchy: **Campbell Ralph D → Paige Mining Inc → Paige No 1**

- 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

- **operator_operates_mine:** Paige Mining Inc → Paige No 1; 1981-05-01 to 1981-09-24; source msha-controller-operator-history
- **controller_controls_mine:** Cary L D → Paige No 1; 1981-05-01 to 1981-09-24; source msha-controller-operator-history
- **controller_controls_operator:** Cary L D → Paige Mining Inc; 1981-05-01 to 1981-09-24; source msha-controller-operator-history
- **operator_operates_mine:** Paige Mining Inc → Paige No 1; 1981-09-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Campbell Ralph D → Paige No 1; 1981-09-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Campbell Ralph D → Paige Mining Inc; 1981-09-25 to current/open; source msha-controller-operator-history