# Relationship history for MSHA mine 4801841

Current hierarchy: **Lee John  Challinor; Brian Dean  Challinor → Cumberland Gap Hearthstone Inc. → Cumberland Gap Hearthstone Inc.**

- 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

- **operator_operates_mine:** Cumberland Gap Hearthstone Inc. → Cumberland Gap Hearthstone Inc.; 2020-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brian Dean  Challinor et al → Cumberland Gap Hearthstone Inc.; 2020-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian Dean  Challinor et al → Cumberland Gap Hearthstone Inc.; 2020-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lee John  Challinor et al → Cumberland Gap Hearthstone Inc.; 2020-10-14 to current/open; source msha-controller-operator-history