# Relationship history for MSHA mine 4002428

Current hierarchy: **Thomas Virgil C → V & E Coal Company Inc → Bee Branch 17-1**

- 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:** V & E Coal Company Inc → Bee Branch 17-1; 1978-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas Virgil C Et Al → Bee Branch 17-1; 1978-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas Virgil C Et Al → V & E Coal Company Inc; 1978-06-01 to current/open; source msha-controller-operator-history