# Relationship history for MSHA mine 4406814

Current hierarchy: **Hank K  Matney; Fred D  Matney; Rick A  Matney → Nufac Mining Inc → Hess Creek Surface**

- 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:** Looney Roy Et Al → Hess Creek Surface; 1984-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rick A  Matney  et al → Hess Creek Surface; 1991-08-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Looney Brothers Coal Company Inc → Hess Creek Surface; 1995-11-01 to 1996-08-05; source msha-controller-operator-history
- **controller_controls_operator:** Looney Roy Et Al → Looney Brothers Coal Company Inc; 1995-11-01 to 1996-08-05; source msha-controller-operator-history
- **operator_operates_mine:** Nufac Mining Inc → Hess Creek Surface; 1996-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rick A  Matney  et al → Nufac Mining Inc; 1996-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hank K  Matney  et al → Nufac Mining Inc; 1996-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred D  Matney  et al → Nufac Mining Inc; 1996-08-06 to current/open; source msha-controller-operator-history