# Relationship history for MSHA mine 4405631

Current hierarchy: **Clayburne Charles R → Jeff Coal Inc → No 1**

- 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:** High Point Coal Company → No 1; 1981-04-01 to 1982-06-09; source msha-controller-operator-history
- **controller_controls_mine:** Stacy Lloyd → No 1; 1981-04-01 to 1982-06-09; source msha-controller-operator-history
- **controller_controls_operator:** Stacy Lloyd → High Point Coal Company; 1981-04-01 to 1982-06-09; source msha-controller-operator-history
- **operator_operates_mine:** Jeff Coal Inc → No 1; 1982-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Clayburne Charles R → No 1; 1982-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clayburne Charles R → Jeff Coal Inc; 1982-06-10 to current/open; source msha-controller-operator-history