# Relationship history for MSHA mine 3002682

Current hierarchy: **Layman Eunice → C & L Well Drilling Inc → C & L 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:** C & L Well Drilling Inc → C & L Pit; 1985-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Layman Eunice → C & L Pit; 1985-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Layman Eunice → C & L Well Drilling Inc; 1985-04-01 to current/open; source msha-controller-operator-history