# Relationship history for MSHA mine 4300632

Current hierarchy: **Albert J  Gawet → Gawet Marble & Granite Inc. → Smoke Rise Brandon**

- 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:** Gawet Marble & Granite Inc. → Smoke Rise Brandon; 2005-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Albert J  Gawet → Smoke Rise Brandon; 2005-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Albert J  Gawet → Gawet Marble & Granite Inc.; 2005-07-13 to current/open; source msha-controller-operator-history