# Relationship history for MSHA mine 2401553

Current hierarchy: **Hatfield Koyle & David → G M R Resources Company → Lowland Creek Placer**

- 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:** G M R Resources Company → Lowland Creek Placer; 1980-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hatfield Koyle & David → Lowland Creek Placer; 1980-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hatfield Koyle & David → G M R Resources Company; 1980-05-01 to current/open; source msha-controller-operator-history