# Relationship history for MSHA mine 4403443

Current hierarchy: **NVZ, LLC; BKF Solutions, LLC → Coal Technology International, LLC → Wakenva Prep 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Lambert Coal Company Inc → Wakenva Prep Plant; 1950-01-01 to 1998-06-01; source msha-controller-operator-history
- **controller_controls_mine:** Arlie J  Lambert et al → Wakenva Prep Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arlie J  Lambert et al → Lambert Coal Company Inc; 1950-01-01 to 1998-06-01; source msha-controller-operator-history
- **controller_controls_operator:** Dennis B  Sutherland et al → Lambert Coal Company Inc; 1950-01-01 to 1998-06-01; source msha-controller-operator-history
- **controller_controls_mine:** Jerry W  Wharton → Wakenva Prep Plant; 1990-09-01 to 2009-04-29; source msha-controller-operator-history
- **operator_operates_mine:** A & G Coal Corp → Wakenva Prep Plant; 1998-06-02 to 2001-04-08; source msha-controller-operator-history
- **controller_controls_operator:** Jerry W  Wharton → A & G Coal Corp; 1998-06-02 to 2001-04-08; source msha-controller-operator-history
- **operator_operates_mine:** Lambert Coal Company Inc → Wakenva Prep Plant; 2001-04-09 to 2008-08-11; source msha-controller-operator-history
- **controller_controls_operator:** Arlie J  Lambert et al → Lambert Coal Company Inc; 2001-04-09 to 2008-08-11; source msha-controller-operator-history
- **controller_controls_operator:** Dennis B  Sutherland et al → Lambert Coal Company Inc; 2001-04-09 to 2008-08-11; source msha-controller-operator-history
- **controller_controls_mine:** David C  Cooper → Wakenva Prep Plant; 2008-07-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cooper Coal Inc → Wakenva Prep Plant; 2008-08-12 to 2010-11-30; source msha-controller-operator-history
- **controller_controls_operator:** David C  Cooper → Cooper Coal Inc; 2008-08-12 to 2010-11-30; source msha-controller-operator-history
- **controller_controls_mine:** James C  Justice II et al → Wakenva Prep Plant; 2009-04-30 to 2017-03-26; source msha-controller-operator-history
- **controller_controls_operator:** James C  Justice II et al → A & G Coal Corp; 2009-04-30 to 2001-04-08; source msha-controller-operator-history
- **operator_operates_mine:** Coal Technology International, LLC → Wakenva Prep Plant; 2010-12-01 to 2013-05-31; source msha-controller-operator-history
- **controller_controls_mine:** BKF Solutions, LLC et al → Wakenva Prep Plant; 2010-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** BKF Solutions, LLC et al → Coal Technology International, LLC; 2010-12-01 to 2013-05-31; source msha-controller-operator-history
- **controller_controls_operator:** NVZ, LLC et al → Coal Technology International, LLC; 2010-12-01 to 2013-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Omega Holdings LLC → Wakenva Prep Plant; 2011-01-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Harold Keene Surface Co., LLC → Wakenva Prep Plant; 2013-06-01 to 2016-12-14; source msha-controller-operator-history
- **controller_controls_operator:** Omega Holdings LLC → Harold Keene Surface Co., LLC; 2013-06-01 to 2016-12-14; source msha-controller-operator-history
- **operator_operates_mine:** Coal Technology International, LLC → Wakenva Prep Plant; 2016-12-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** NVZ, LLC et al → Coal Technology International, LLC; 2016-12-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** BKF Solutions, LLC et al → Coal Technology International, LLC; 2016-12-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jillean L  Justice et al → Wakenva Prep Plant; 2017-03-27 to 2022-10-02; source msha-controller-operator-history
- **controller_controls_operator:** Jillean L  Justice et al → A & G Coal Corp; 2017-03-27 to 2001-04-08; source msha-controller-operator-history
- **controller_controls_operator:** James C  Justice lll et al → A & G Coal Corp; 2017-03-27 to 2001-04-08; source msha-controller-operator-history
- **controller_controls_mine:** James C  Justice III → Wakenva Prep Plant; 2022-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James C  Justice III → A & G Coal Corp; 2022-10-03 to 2001-04-08; source msha-controller-operator-history