# Relationship history for MSHA mine 1701069

Current hierarchy: **Calvin J  Coleman → Coleman Concrete Inc. → West Bethel 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Coleman Concrete Inc. → West Bethel Pit; 2022-06-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Calvin J  Coleman → West Bethel Pit; 2022-06-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Calvin J  Coleman → Coleman Concrete Inc.; 2022-06-14 to current/open; source msha-controller-operator-history