# Relationship history for MSHA mine 2501283

Current hierarchy: **Allen  Olmstead → Broken Bow Ready Mix Inc. → Reynolds Pit**

- 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:** Broken Bow Ready Mix Inc. → Reynolds Pit; 2012-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Allen  Olmstead → Reynolds Pit; 2012-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Allen  Olmstead → Broken Bow Ready Mix Inc.; 2012-07-24 to current/open; source msha-controller-operator-history