# Relationship history for MSHA mine 1518792

Current hierarchy: **George Chris  Waugh → Coal Creek Mining, LLC → #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:** Golden  Sandlin et al → #1; 2004-07-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Big Dog Energy, Inc. → #1; 2004-08-27 to 2005-05-02; source msha-controller-operator-history
- **controller_controls_mine:** Clyde  Boyd → #1; 2004-08-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clyde  Boyd → Big Dog Energy, Inc.; 2004-08-27 to 2005-05-02; source msha-controller-operator-history
- **operator_operates_mine:** Green River Mining Company Inc. → #1; 2005-05-03 to 2008-06-26; source msha-controller-operator-history
- **controller_controls_operator:** Golden  Sandlin et al → Green River Mining Company Inc.; 2005-05-03 to 2008-06-26; source msha-controller-operator-history
- **controller_controls_mine:** Rowland  Goble  et al → #1; 2008-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & D Mining Inc → #1; 2008-06-27 to 2008-12-01; source msha-controller-operator-history
- **controller_controls_operator:** Rowland  Goble  et al → C & D Mining Inc; 2008-06-27 to 2008-12-01; source msha-controller-operator-history
- **controller_controls_operator:** Charles A  Ratliff et al → C & D Mining Inc; 2008-06-27 to 2008-12-01; source msha-controller-operator-history
- **controller_controls_mine:** Clark D  Pergrem → #1; 2008-10-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Charger Mining Co Inc → #1; 2008-12-02 to 2009-09-07; source msha-controller-operator-history
- **controller_controls_mine:** Charlie  Sandlin → #1; 2008-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charlie  Sandlin → Charger Mining Co Inc; 2008-12-02 to 2009-09-07; source msha-controller-operator-history
- **operator_operates_mine:** Jones Mining, LLC → #1; 2009-09-08 to 2010-05-02; source msha-controller-operator-history
- **controller_controls_mine:** Robert Bruce  Jones → #1; 2009-09-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert Bruce  Jones → Jones Mining, LLC; 2009-09-08 to 2010-05-02; source msha-controller-operator-history
- **operator_operates_mine:** Coal Mining, Inc. → #1; 2010-05-03 to 2010-11-04; source msha-controller-operator-history
- **controller_controls_operator:** Clark D  Pergrem → Coal Mining, Inc.; 2010-05-03 to 2010-11-04; source msha-controller-operator-history
- **operator_operates_mine:** Coal Creek Mining, LLC → #1; 2010-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** George Chris  Waugh → #1; 2010-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George Chris  Waugh → Coal Creek Mining, LLC; 2010-11-05 to current/open; source msha-controller-operator-history