# Relationship history for MSHA mine 1510306

Current hierarchy: **Cleveland-Cliffs Inc → Cliffs Logan County Coal Terminals, LLC → Big Sandy River Dock**

- 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:** Pen Holdings Inc → Big Sandy River Dock; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rapoca Energy Company/Norton Division → Big Sandy River Dock; 1977-03-01 to 1978-09-12; source msha-controller-operator-history
- **controller_controls_mine:** Fields Resources Inc → Big Sandy River Dock; 1977-03-01 to 1978-09-12; source msha-controller-operator-history
- **controller_controls_operator:** Fields Resources Inc → Rapoca Energy Company/Norton Division; 1977-03-01 to 1978-09-12; source msha-controller-operator-history
- **controller_controls_mine:** Occidental Petroleum Corp → Big Sandy River Dock; 1978-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kentucky-Ohio Transportation Company → Big Sandy River Dock; 1978-09-13 to 1983-05-25; source msha-controller-operator-history
- **controller_controls_operator:** Occidental Petroleum Corp → Kentucky-Ohio Transportation Company; 1978-09-13 to 1983-05-25; source msha-controller-operator-history
- **operator_operates_mine:** Pen Coal Corp → Big Sandy River Dock; 1983-05-26 to 2002-12-29; source msha-controller-operator-history
- **controller_controls_operator:** Pen Holdings Inc → Pen Coal Corp; 1983-05-26 to 2002-12-29; source msha-controller-operator-history
- **controller_controls_mine:** John C  Smith Jr → Big Sandy River Dock; 2001-03-19 to 2006-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Argus Energy, LLC → Big Sandy River Dock; 2002-12-30 to 2003-01-12; source msha-controller-operator-history
- **controller_controls_mine:** James H  Booth et al → Big Sandy River Dock; 2002-12-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James H  Booth et al → Argus Energy, LLC; 2002-12-30 to 2003-01-12; source msha-controller-operator-history
- **operator_operates_mine:** Appalachian Fuels, LLC → Big Sandy River Dock; 2003-01-13 to 2008-01-04; source msha-controller-operator-history
- **controller_controls_operator:** John C  Smith Jr → Appalachian Fuels, LLC; 2003-01-13 to 2006-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Energy Coal Resources Inc → Big Sandy River Dock; 2006-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Energy Coal Resources Inc → Appalachian Fuels, LLC; 2006-01-17 to 2008-01-04; source msha-controller-operator-history
- **operator_operates_mine:** Cliffs Logan County Coal Terminals, LLC → Big Sandy River Dock; 2008-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** INR-I Holdings LLC → Big Sandy River Dock; 2008-01-05 to 2010-08-01; source msha-controller-operator-history
- **controller_controls_operator:** INR-I Holdings LLC → Cliffs Logan County Coal Terminals, LLC; 2008-01-05 to 2010-08-01; source msha-controller-operator-history
- **controller_controls_mine:** Cleveland-Cliffs Inc → Big Sandy River Dock; 2010-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cleveland-Cliffs Inc → Cliffs Logan County Coal Terminals, LLC; 2010-08-02 to current/open; source msha-controller-operator-history