# Relationship history for MSHA mine 3608199

Current hierarchy: **James E  Hatfield; J Todd  Hatfield → Wv H & H Enterprises Inc → Mine No 2**

- 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

- **controller_controls_mine:** Immonen David J → Mine No 2; 1990-05-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Black Rock Exploration Company Inc → Mine No 2; 1991-04-01 to 1996-07-23; source msha-controller-operator-history
- **controller_controls_operator:** Immonen David J → Black Rock Exploration Company Inc; 1991-04-01 to 1996-07-23; source msha-controller-operator-history
- **operator_operates_mine:** Wv H & H Enterprises Inc → Mine No 2; 1996-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James E  Hatfield et al → Mine No 2; 1996-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James E  Hatfield et al → Wv H & H Enterprises Inc; 1996-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J Todd  Hatfield et al → Wv H & H Enterprises Inc; 1996-07-24 to current/open; source msha-controller-operator-history