# Relationship history for MSHA mine 4609291

Current hierarchy: **M  Natarajan → Blue Ridge Mining, LLC → 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

- **controller_controls_mine:** Patrick  Hopkins → Mine No 1; 2005-11-01 to 2006-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Jeffrey  Hopkins → Mine No 1; 2006-11-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gunz Energy Inc → Mine No 1; 2008-07-02 to 2008-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Martin E  McGee → Mine No 1; 2008-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin E  McGee → Gunz Energy Inc; 2008-07-02 to 2008-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Regal Enterprises, Inc. → Mine No 1; 2008-12-01 to 2009-06-08; source msha-controller-operator-history
- **controller_controls_operator:** Patrick  Hopkins → Regal Enterprises, Inc.; 2008-12-01 to 2006-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey  Hopkins → Regal Enterprises, Inc.; 2008-12-01 to 2009-06-08; source msha-controller-operator-history
- **operator_operates_mine:** Blue Ridge Mining, LLC → Mine No 1; 2009-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dave  O'Brien et al → Mine No 1; 2009-06-09 to 2013-03-25; source msha-controller-operator-history
- **controller_controls_operator:** Dave  O'Brien et al → Blue Ridge Mining, LLC; 2009-06-09 to 2013-03-25; source msha-controller-operator-history
- **controller_controls_operator:** Ed  Carpp et al → Blue Ridge Mining, LLC; 2009-06-09 to 2013-03-25; source msha-controller-operator-history
- **controller_controls_mine:** M  Natarajan → Mine No 1; 2013-03-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** M  Natarajan → Blue Ridge Mining, LLC; 2013-03-26 to current/open; source msha-controller-operator-history