# Relationship history for MSHA mine 4609154

Current hierarchy: **Haghler LLC → Greenbrier Smokeless Coal Mining, LLC. → Pocahontas Mine**

- 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:** Massey Energy Company → Pocahontas Mine; 1995-04-01 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Joseph C  Turley III et al → Pocahontas Mine; 2005-12-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Greenbrier Smokeless Coal Mining, LLC → Pocahontas Mine; 2006-03-22 to 2006-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Joseph C  Turley III et al → Greenbrier Smokeless Coal Mining, LLC; 2006-03-22 to 2006-12-31; source msha-controller-operator-history
- **operator_operates_mine:** West Virginia Mine Power, Inc → Pocahontas Mine; 2007-01-01 to 2008-09-16; source msha-controller-operator-history
- **controller_controls_mine:** John B  Preece → Pocahontas Mine; 2007-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John B  Preece → West Virginia Mine Power, Inc; 2007-01-15 to 2008-09-16; source msha-controller-operator-history
- **operator_operates_mine:** White Buck Coal Company → Pocahontas Mine; 2008-09-17 to 2014-08-07; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → White Buck Coal Company; 2008-09-17 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Pocahontas Mine; 2011-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → White Buck Coal Company; 2011-06-01 to 2014-08-07; source msha-controller-operator-history
- **controller_controls_mine:** Coronado Coal LLC → Pocahontas Mine; 2013-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Greenbrier Minerals LLC → Pocahontas Mine; 2014-08-08 to 2025-01-20; source msha-controller-operator-history
- **controller_controls_operator:** Coronado Coal LLC → Greenbrier Minerals LLC; 2014-08-08 to 2025-01-20; source msha-controller-operator-history
- **operator_operates_mine:** Greenbrier Smokeless Coal Mining, LLC. → Pocahontas Mine; 2025-01-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Haghler LLC → Pocahontas Mine; 2025-01-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Haghler LLC → Greenbrier Smokeless Coal Mining, LLC.; 2025-01-21 to current/open; source msha-controller-operator-history