# Relationship history for MSHA mine 4300101

Current hierarchy: **Dana T  Percy Jr → Dale E. Percy Inc → Nadeau Sand & Gravel**

- 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

- **operator_operates_mine:** A Nadeau & Company Inc → Nadeau Sand & Gravel; 1950-01-01 to 2022-05-30; source msha-controller-operator-history
- **controller_controls_mine:** Albert S Nadeau → Nadeau Sand & Gravel; 1950-01-01 to 2013-11-25; source msha-controller-operator-history
- **controller_controls_operator:** Albert S Nadeau → A Nadeau & Company Inc; 1950-01-01 to 2013-11-25; source msha-controller-operator-history
- **controller_controls_mine:** Dana T  Percy Jr → Nadeau Sand & Gravel; 1979-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adrian  Nadeau et al → Nadeau Sand & Gravel; 2013-11-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adrian  Nadeau et al → A Nadeau & Company Inc; 2013-11-26 to 2022-05-30; source msha-controller-operator-history
- **operator_operates_mine:** Dale E. Percy Inc → Nadeau Sand & Gravel; 2022-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dana T  Percy Jr → Dale E. Percy Inc; 2022-05-31 to current/open; source msha-controller-operator-history