# Relationship history for MSHA mine 4202349

Current hierarchy: **Bryce H  Haas → Carmel Stone Supply → 9 mile 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:** Fox Tail Quarries → 9 mile Quarry; 2002-04-17 to 2018-08-07; source msha-controller-operator-history
- **controller_controls_mine:** William E  Day → 9 mile Quarry; 2002-04-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William E  Day → Fox Tail Quarries; 2002-04-17 to 2018-08-07; source msha-controller-operator-history
- **operator_operates_mine:** Carmel Stone Supply → 9 mile Quarry; 2018-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bryce H  Haas → 9 mile Quarry; 2018-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bryce H  Haas → Carmel Stone Supply; 2018-08-08 to current/open; source msha-controller-operator-history