# Relationship history for MSHA mine 3004128

Current hierarchy: **Patrick  Curran → SEAWAY TIMBER HARVESTING INC → SANTA CLARA GRAVEL MINE**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Patrick  Curran → SANTA CLARA GRAVEL MINE; 2021-07-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Seaway Timber Harvesting Inc → SANTA CLARA GRAVEL MINE; 2024-04-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patrick  Curran → Seaway Timber Harvesting Inc; 2024-04-17 to current/open; source msha-controller-operator-history