# Relationship history for MSHA mine 4202237

Current hierarchy: **Melvin D  Clark → Mel Clark, Inc. → Temple View Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Mel Clark, Inc. → Temple View Pit; 1999-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Melvin D  Clark → Temple View Pit; 1999-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Melvin D  Clark → Mel Clark, Inc.; 1999-03-01 to current/open; source msha-controller-operator-history