# Relationship history for MSHA mine 4801883

Current hierarchy: **Katherine  Till; Bru  Till → Brutill Construction, Inc. → Screen #4**

- 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:** Katherine  Till et al → Screen #4; 2023-03-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brutill Construction, Inc. → Screen #4; 2024-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Katherine  Till et al → Brutill Construction, Inc.; 2024-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bru  Till et al → Brutill Construction, Inc.; 2024-07-08 to current/open; source msha-controller-operator-history