# Relationship history for MSHA mine 1001421

Current hierarchy: **Lowry Robert R → Lone Pine → Lone Pine**

- 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

- **operator_operates_mine:** Amindore Gold & Silver Mining Inc → Lone Pine; 1979-01-01 to 1982-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Halmadge August → Lone Pine; 1979-01-01 to 1982-09-20; source msha-controller-operator-history
- **controller_controls_operator:** Halmadge August → Amindore Gold & Silver Mining Inc; 1979-01-01 to 1982-09-20; source msha-controller-operator-history
- **operator_operates_mine:** Lone Pine → Lone Pine; 1982-09-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lowry Robert R → Lone Pine; 1982-09-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lowry Robert R → Lone Pine; 1982-09-21 to current/open; source msha-controller-operator-history