# Relationship history for MSHA mine 1519663

Current hierarchy: **John Mitch Potter → Coal-Mac MET, LLC → CV56**

- 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:** Laird T  Orr Jr. → CV56; 1978-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jonathan  Whitaker et al → CV56; 2010-09-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Green Hill Mining Inc → CV56; 2012-05-16 to 2020-03-03; source msha-controller-operator-history
- **controller_controls_operator:** Laird T  Orr Jr. → Green Hill Mining Inc; 2012-05-16 to 2020-03-03; source msha-controller-operator-history
- **controller_controls_mine:** John T  Quintrell → CV56; 2019-09-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Civil, LLC → CV56; 2020-03-04 to 2021-09-23; source msha-controller-operator-history
- **controller_controls_operator:** John T  Quintrell → Civil, LLC; 2020-03-04 to 2021-09-23; source msha-controller-operator-history
- **operator_operates_mine:** Denali Energy Group LLC → CV56; 2021-09-24 to 2023-04-09; source msha-controller-operator-history
- **controller_controls_operator:** Jonathan  Whitaker et al → Denali Energy Group LLC; 2021-09-24 to 2023-04-09; source msha-controller-operator-history
- **controller_controls_operator:** Conrad  Whitaker et al → Denali Energy Group LLC; 2021-09-24 to 2023-04-09; source msha-controller-operator-history
- **operator_operates_mine:** Smithfield Contracting LLC → CV56; 2023-04-10 to 2024-01-23; source msha-controller-operator-history
- **controller_controls_mine:** Cynthia  Whitaker → CV56; 2023-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cynthia  Whitaker → Smithfield Contracting LLC; 2023-04-10 to 2024-01-23; source msha-controller-operator-history
- **operator_operates_mine:** Civil, LLC → CV56; 2024-01-24 to 2026-03-11; source msha-controller-operator-history
- **controller_controls_operator:** John T  Quintrell → Civil, LLC; 2024-01-24 to 2026-03-11; source msha-controller-operator-history
- **controller_controls_mine:** John Mitch Potter → CV56; 2025-06-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Coal-Mac MET, LLC → CV56; 2026-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John Mitch Potter → Coal-Mac MET, LLC; 2026-03-12 to current/open; source msha-controller-operator-history