# Relationship history for MSHA mine 4407142

Current hierarchy: **C6 Ventures LLC; Mark  Nelson → Mountaineer Metallurgical Holdings LLC → Flat Rock Plant**

- 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:** Larry  Stinson et al → Flat Rock Plant; 1976-05-01 to 2012-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Harold Keene Coal Company Inc → Flat Rock Plant; 2005-07-15 to 2011-01-13; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Stinson et al → Harold Keene Coal Company Inc; 2005-07-15 to 2011-01-13; source msha-controller-operator-history
- **controller_controls_operator:** (Harold) Lynn  Keene et al → Harold Keene Coal Company Inc; 2005-07-15 to 2011-01-13; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery A  Hoops → Flat Rock Plant; 2009-05-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Harold Keene Coal Preparation Company LLC → Flat Rock Plant; 2011-01-14 to 2012-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Omega Holdings LLC → Flat Rock Plant; 2011-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Omega Holdings LLC → Harold Keene Coal Preparation Company LLC; 2011-01-14 to 2012-01-16; source msha-controller-operator-history
- **controller_controls_mine:** SunCoke Energy Incorporated → Flat Rock Plant; 2012-01-17 to 2018-08-20; source msha-controller-operator-history
- **controller_controls_operator:** SunCoke Energy Incorporated → Harold Keene Coal Company Inc; 2012-01-17 to 2011-01-13; source msha-controller-operator-history
- **operator_operates_mine:** Harold Keene Coal Co. Inc. → Flat Rock Plant; 2012-01-17 to 2016-10-05; source msha-controller-operator-history
- **controller_controls_operator:** SunCoke Energy Incorporated → Harold Keene Coal Co. Inc.; 2012-01-17 to 2016-10-05; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Stinson et al → Harold Keene Coal Co. Inc.; 2012-01-17 to 2012-01-16; source msha-controller-operator-history
- **controller_controls_operator:** (Harold) Lynn  Keene et al → Harold Keene Coal Co. Inc.; 2012-01-17 to 2012-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Blackjewel L.L.C. → Flat Rock Plant; 2016-10-06 to 2019-09-01; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery A  Hoops → Blackjewel L.L.C.; 2016-10-06 to 2019-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery A  Hoops → Flat Rock Plant; 2018-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery A  Hoops → Harold Keene Coal Company Inc; 2018-08-21 to 2011-01-13; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery A  Hoops → Harold Keene Coal Co. Inc.; 2018-08-21 to 2016-10-05; source msha-controller-operator-history
- **operator_operates_mine:** Jewell Valley Mining LLC → Flat Rock Plant; 2019-09-02 to 2020-09-28; source msha-controller-operator-history
- **controller_controls_mine:** Rhino Resource Partners LP → Flat Rock Plant; 2019-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rhino Resource Partners LP → Jewell Valley Mining LLC; 2019-09-02 to 2020-09-28; source msha-controller-operator-history
- **operator_operates_mine:** Mountaineer Metallurgical Holdings LLC → Flat Rock Plant; 2020-09-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** C6 Ventures LLC Et Al → Flat Rock Plant; 2020-09-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** C6 Ventures LLC Et Al → Mountaineer Metallurgical Holdings LLC; 2020-09-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Nelson Et Al → Mountaineer Metallurgical Holdings LLC; 2020-09-29 to current/open; source msha-controller-operator-history