# Relationship history for MSHA mine 1900995

Current hierarchy: **Richard J McDonald Revocable Living Trust → R J Mc Donald Inc → R J Mc Donald Inc**

- 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:** R J Mc Donald Inc → R J Mc Donald Inc; 1984-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard J  McDonald → R J Mc Donald Inc; 1984-09-01 to 2023-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Richard J  McDonald → R J Mc Donald Inc; 1984-09-01 to 2023-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Richard J McDonald Revocable Living Trust → R J Mc Donald Inc; 2023-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard J McDonald Revocable Living Trust → R J Mc Donald Inc; 2023-03-01 to current/open; source msha-controller-operator-history