# Relationship history for MSHA mine 3609216

Current hierarchy: **Jamie A Brdaric → BRDARIC EXCAVATING, INC. → BUCK MTN 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:** Brdaric Excavating, Inc. → BUCK MTN QUARRY; 2004-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John P  Brdaric Jr → BUCK MTN QUARRY; 2004-03-23 to 2015-02-17; source msha-controller-operator-history
- **controller_controls_operator:** John P  Brdaric Jr → Brdaric Excavating, Inc.; 2004-03-23 to 2015-02-17; source msha-controller-operator-history
- **controller_controls_mine:** Jamie A Brdaric → BUCK MTN QUARRY; 2015-02-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jamie A Brdaric → Brdaric Excavating, Inc.; 2015-02-18 to current/open; source msha-controller-operator-history