# Relationship history for MSHA mine 0401918

Current hierarchy: **Michael  Carver → R J Noble Company → Orange Plant**

- 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 Noble Company → Orange Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jim D  Grace et al → Orange Plant; 1950-01-01 to 2005-10-03; source msha-controller-operator-history
- **controller_controls_operator:** Jim D  Grace et al → R J Noble Company; 1950-01-01 to 2005-10-03; source msha-controller-operator-history
- **controller_controls_operator:** Paul H  Cleary Jr et al → R J Noble Company; 1950-01-01 to 2005-10-03; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Carver → Orange Plant; 2005-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Carver → R J Noble Company; 2005-10-04 to current/open; source msha-controller-operator-history