# Relationship history for MSHA mine 2602191

Current hierarchy: **Lewis Richard → Meadow Valley Contractors → Deposit No Cl 83-9**

- 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:** Lewis Richard → Deposit No Cl 83-9; 1984-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Meadow Valley Contractors → Deposit No Cl 83-9; 1991-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lewis Richard → Meadow Valley Contractors; 1991-11-01 to current/open; source msha-controller-operator-history