# Relationship history for MSHA mine 4703179

Current hierarchy: **Bruce P Phillips → B. P. Phillips Aggregate, Inc. → Plant 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:** B. P. Phillips Aggregate, Inc. → Plant 1; 1999-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bruce P Phillips → Plant 1; 1999-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bruce P Phillips → B. P. Phillips Aggregate, Inc.; 1999-03-01 to current/open; source msha-controller-operator-history