# Relationship history for MSHA mine 1517746

Current hierarchy: **Sev.en Global Investments a.s. → Pine Branch Mining LLC → Thunder Ridge**

- 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:** Greg  Wells → Thunder Ridge; 1983-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Leslie Resources Inc → Thunder Ridge; 1996-01-01 to 1998-03-08; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Wells → Leslie Resources Inc; 1996-01-01 to 1998-03-08; source msha-controller-operator-history
- **operator_operates_mine:** Leslie Resources Inc → Thunder Ridge; 1998-03-09 to 2004-10-01; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → Thunder Ridge; 1998-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Leslie Resources Inc; 1998-03-09 to 2004-10-01; source msha-controller-operator-history
- **controller_controls_mine:** International Coal Group Inc (ICG) → Thunder Ridge; 2004-10-01 to 2011-06-14; source msha-controller-operator-history
- **operator_operates_mine:** ICG Hazard, LLC → Thunder Ridge; 2004-10-02 to 2014-04-30; source msha-controller-operator-history
- **controller_controls_mine:** International Coal Group Inc (ICG) → Thunder Ridge; 2004-10-02 to 2011-06-14; source msha-controller-operator-history
- **controller_controls_operator:** International Coal Group Inc (ICG) → ICG Hazard, LLC; 2004-10-02 to 2011-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Arch Resources Inc → Thunder Ridge; 2011-06-15 to 2016-04-11; source msha-controller-operator-history
- **controller_controls_mine:** Arch Resources Inc → Thunder Ridge; 2011-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arch Resources Inc → ICG Hazard, LLC; 2011-06-15 to 2014-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Thomas A  Potter et al → Thunder Ridge; 2012-11-09 to 2013-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Blackhawk Mining LLC → Thunder Ridge; 2013-07-01 to 2020-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Pine Branch Mining LLC → Thunder Ridge; 2014-05-01 to 2016-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Blackhawk Mining LLC → Pine Branch Mining LLC; 2014-05-01 to 2016-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Thomas A  Potter et al → Pine Branch Mining LLC; 2014-05-01 to 2013-06-30; source msha-controller-operator-history
- **controller_controls_operator:** John M  Potter et al → Pine Branch Mining LLC; 2014-05-01 to 2013-06-30; source msha-controller-operator-history
- **operator_operates_mine:** KNOTT COUNTY COAL LLC → Thunder Ridge; 2016-04-12 to 2016-04-20; source msha-controller-operator-history
- **controller_controls_operator:** International Coal Group Inc (ICG) → KNOTT COUNTY COAL LLC; 2016-04-12 to 2011-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Quest Energy Corporation → Thunder Ridge; 2016-04-12 to 2017-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Quest Energy Corporation → KNOTT COUNTY COAL LLC; 2016-04-12 to 2016-04-20; source msha-controller-operator-history
- **controller_controls_operator:** Arch Resources Inc → KNOTT COUNTY COAL LLC; 2016-04-12 to 2016-04-11; source msha-controller-operator-history
- **operator_operates_mine:** Pine Branch Mining LLC → Thunder Ridge; 2016-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blackhawk Mining LLC → Pine Branch Mining LLC; 2016-04-21 to 2020-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Thomas A  Potter et al → Pine Branch Mining LLC; 2016-04-21 to 2013-06-30; source msha-controller-operator-history
- **controller_controls_operator:** John M  Potter et al → Pine Branch Mining LLC; 2016-04-21 to 2013-06-30; source msha-controller-operator-history
- **controller_controls_mine:** American Resources Corporation → Thunder Ridge; 2017-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** American Resources Corporation → KNOTT COUNTY COAL LLC; 2017-01-05 to 2016-04-20; source msha-controller-operator-history
- **controller_controls_mine:** Sev.en Global Investments a.s. → Thunder Ridge; 2020-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sev.en Global Investments a.s. → Pine Branch Mining LLC; 2020-06-01 to 2016-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Sev.en Global Investments a.s. → Pine Branch Mining LLC; 2020-06-01 to current/open; source msha-controller-operator-history