# Relationship history for MSHA mine 4503653

Current hierarchy: **Mike D  Evenoff; Jack D  Evenoff → Highland Quarry LLC → Highland Quarry**

- 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:** Highland Quarry LLC → Highland Quarry; 2008-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jack D  Evenoff  et al → Highland Quarry; 2008-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jack D  Evenoff  et al → Highland Quarry LLC; 2008-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike D  Evenoff  et al → Highland Quarry LLC; 2008-10-08 to current/open; source msha-controller-operator-history