# Relationship history for MSHA mine 1519556

Current hierarchy: **Clyde E  Meenach; Steven R  Adkins → Mountain Source Energy, LLC → Job #8**

- 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:** Arthur E  Walker Jr → Job #8; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Paul E Alexander et al → Job #8; 2005-08-22 to 2006-10-15; source msha-controller-operator-history
- **controller_controls_mine:** Clyde  Meenach  et al → Job #8; 2006-10-16 to 2013-05-09; source msha-controller-operator-history
- **operator_operates_mine:** The Walker Company Of Kentucky, Inc. → Job #8; 2011-01-10 to 2011-01-27; source msha-controller-operator-history
- **controller_controls_operator:** Arthur E  Walker Jr → The Walker Company Of Kentucky, Inc.; 2011-01-10 to 2011-01-27; source msha-controller-operator-history
- **operator_operates_mine:** Black Diamond Inc. → Job #8; 2011-01-28 to 2013-05-09; source msha-controller-operator-history
- **controller_controls_mine:** Arthur E  Walker Jr → Job #8; 2011-01-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arthur E  Walker Jr → Black Diamond Inc.; 2011-01-28 to 2013-05-09; source msha-controller-operator-history
- **operator_operates_mine:** Mountain Source Energy, LLC → Job #8; 2013-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul E Alexander et al → Mountain Source Energy, LLC; 2013-05-10 to 2006-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Clyde  Mennach et al → Mountain Source Energy, LLC; 2013-05-10 to 2006-10-15; source msha-controller-operator-history
- **controller_controls_mine:** Steven R  Adkins et al → Job #8; 2013-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steven R  Adkins et al → Mountain Source Energy, LLC; 2013-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clyde E  Meenach et al → Mountain Source Energy, LLC; 2013-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clyde  Meenach  et al → Mountain Source Energy, LLC; 2013-05-10 to 2013-05-09; source msha-controller-operator-history
- **controller_controls_operator:** Suzette  Meenach et al → Mountain Source Energy, LLC; 2013-05-10 to 2013-05-09; source msha-controller-operator-history