# Relationship history for MSHA mine 1517691

Current hierarchy: **Ferroglobe PLC → Alden Resources LLC → Mine #3**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** TECO Energy Inc → Mine #3; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert M  Keen → Mine #3; 1986-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gatliff Coal Company Inc → Mine #3; 1995-07-01 to 1996-09-17; source msha-controller-operator-history
- **controller_controls_operator:** TECO Energy Inc → Gatliff Coal Company Inc; 1995-07-01 to 1996-09-17; source msha-controller-operator-history
- **operator_operates_mine:** Minton Hickory Coal Company → Mine #3; 1996-09-18 to 2003-03-18; source msha-controller-operator-history
- **controller_controls_operator:** Robert M  Keen → Minton Hickory Coal Company; 1996-09-18 to 2003-03-18; source msha-controller-operator-history
- **controller_controls_mine:** Jackie  Hembree → Mine #3; 1997-02-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Headache Coal Co. Inc. → Mine #3; 2003-03-19 to 2004-08-23; source msha-controller-operator-history
- **controller_controls_operator:** Jackie  Hembree → Headache Coal Co. Inc.; 2003-03-19 to 2004-08-23; source msha-controller-operator-history
- **controller_controls_mine:** Timothy L  Webb → Mine #3; 2004-03-05 to 2006-01-25; source msha-controller-operator-history
- **operator_operates_mine:** Goodin Creek Mining Company Inc → Mine #3; 2004-08-24 to 2007-05-14; source msha-controller-operator-history
- **controller_controls_operator:** Timothy L  Webb → Goodin Creek Mining Company Inc; 2004-08-24 to 2006-01-25; source msha-controller-operator-history
- **controller_controls_mine:** James  Cox et al → Mine #3; 2006-01-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Cox et al → Goodin Creek Mining Company Inc; 2006-01-26 to 2007-05-14; source msha-controller-operator-history
- **controller_controls_mine:** James  Cox et al → Mine #3; 2007-03-30 to 2009-07-16; source msha-controller-operator-history
- **operator_operates_mine:** Alden Resources LLC → Mine #3; 2007-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Cox et al → Alden Resources LLC; 2007-05-15 to 2009-07-16; source msha-controller-operator-history
- **controller_controls_mine:** NCGPAsset Holdings II LP et al → Mine #3; 2009-07-17 to 2011-07-31; source msha-controller-operator-history
- **controller_controls_operator:** NCGPAsset Holdings II LP et al → Alden Resources LLC; 2009-07-17 to 2011-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Ferroglobe PLC → Mine #3; 2011-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ferroglobe PLC → Alden Resources LLC; 2011-08-01 to current/open; source msha-controller-operator-history