# Relationship history for MSHA mine 4609065

Current hierarchy: **Douglas M  Epling → Mountain Edge Mining, Inc. → Sweet Birch**

- 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:** Douglas M  Epling → Sweet Birch; 1994-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → Sweet Birch; 1998-05-19 to 2007-10-30; source msha-controller-operator-history
- **controller_controls_mine:** Dale R Felts → Sweet Birch; 2003-07-14 to 2004-09-16; source msha-controller-operator-history
- **controller_controls_mine:** Dennis  Mahaffey → Sweet Birch; 2004-09-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Old Country Mining, Inc. → Sweet Birch; 2004-09-27 to 2006-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Dale R Felts → Old Country Mining, Inc.; 2004-09-27 to 2004-09-16; source msha-controller-operator-history
- **controller_controls_operator:** Dennis  Mahaffey → Old Country Mining, Inc.; 2004-09-27 to 2006-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Colony Bay Coal Company → Sweet Birch; 2006-02-01 to 2006-03-12; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Colony Bay Coal Company; 2006-02-01 to 2006-03-12; source msha-controller-operator-history
- **operator_operates_mine:** Mountain Edge Mining, Inc. → Sweet Birch; 2006-03-13 to 2008-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Douglas M  Epling → Mountain Edge Mining, Inc.; 2006-03-13 to 2008-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Patriot Coal Corporation → Sweet Birch; 2007-10-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patriot Coal Corporation → Colony Bay Coal Company; 2007-10-31 to 2006-03-12; source msha-controller-operator-history
- **operator_operates_mine:** Colony Bay Coal Company → Sweet Birch; 2008-02-01 to 2008-03-17; source msha-controller-operator-history
- **controller_controls_operator:** Patriot Coal Corporation → Colony Bay Coal Company; 2008-02-01 to 2008-03-17; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Colony Bay Coal Company; 2008-02-01 to 2007-10-30; source msha-controller-operator-history
- **operator_operates_mine:** Mountain Edge Mining, Inc. → Sweet Birch; 2008-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Douglas M  Epling → Mountain Edge Mining, Inc.; 2008-03-18 to current/open; source msha-controller-operator-history