# Relationship history for MSHA mine 4608963

Current hierarchy: **Hung  Q  Nguyen → Harman Branch Mining, Inc. → Mine 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:** Harman Branch Mining, Inc. → Mine No. 1; 2002-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Daniel S  Jordan → Mine No. 1; 2002-06-11 to 2007-02-27; source msha-controller-operator-history
- **controller_controls_operator:** Daniel S  Jordan → Harman Branch Mining, Inc.; 2002-06-11 to 2007-02-27; source msha-controller-operator-history
- **controller_controls_mine:** Hung  Q  Nguyen → Mine No. 1; 2007-02-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hung  Q  Nguyen → Harman Branch Mining, Inc.; 2007-02-28 to current/open; source msha-controller-operator-history