# Relationship history for MSHA mine 1518532

Current hierarchy: **Denzil R  Hall → Henson Branch Coal Inc. → # 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:** Henson Branch Coal Inc. → # 1; 2002-04-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Denzil R  Hall → # 1; 2002-04-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Denzil R  Hall → Henson Branch Coal Inc.; 2002-04-02 to current/open; source msha-controller-operator-history