# Relationship history for MSHA mine 1202092

Current hierarchy: **Shaw Ronald B & Richard D → R & R Coal Inc → Lords Pit No 11**

- 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

- **controller_controls_mine:** Shaw Ronald B & Richard D → Lords Pit No 11; 1980-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** R & R Coal Inc → Lords Pit No 11; 1990-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shaw Ronald B & Richard D → R & R Coal Inc; 1990-10-01 to current/open; source msha-controller-operator-history