# Relationship history for MSHA mine 0203218

Current hierarchy: **Owen  McCrae → OMC General Contractors Inc → OMC**

- 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:** OMC General Contractors Inc → OMC; 2008-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Owen  McCrae → OMC; 2008-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Owen  McCrae → OMC General Contractors Inc; 2008-04-04 to current/open; source msha-controller-operator-history