# Relationship history for MSHA mine 0801091

Current hierarchy: **Ronald M  Bergeron Sr → Bergeron Land Development Inc → Arvida Pit**

- 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:** Bergeron Land Development Inc → Arvida Pit; 1988-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ronald M  Bergeron Sr → Arvida Pit; 1988-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald M  Bergeron Sr → Bergeron Land Development Inc; 1988-02-01 to current/open; source msha-controller-operator-history