# Relationship history for MSHA mine 3610489

Current hierarchy: **Stacey  McClain → S.McClain Stone Co. Inc. → S.McClain Stone Quarry #2**

- 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

- **controller_controls_mine:** Stacey  McClain → S.McClain Stone Quarry #2; 2005-08-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** S.McClain Stone Co. Inc. → S.McClain Stone Quarry #2; 2026-01-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stacey  McClain → S.McClain Stone Co. Inc.; 2026-01-20 to current/open; source msha-controller-operator-history