# Relationship history for MSHA mine 3503617

Current hierarchy: **Brad  Reynoso; Jamie  Dalke → Willamette Valley Aggregates LLC → Mason Quarry Portable**

- 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:** Mid Pacific Enterprises Inc → Mason Quarry Portable; 2005-05-05 to 2022-07-14; source msha-controller-operator-history
- **controller_controls_mine:** Merle M  Mitchell → Mason Quarry Portable; 2005-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Merle M  Mitchell → Mid Pacific Enterprises Inc; 2005-05-05 to 2022-07-14; source msha-controller-operator-history
- **operator_operates_mine:** Willamette Valley Excavating → Mason Quarry Portable; 2022-07-15 to 2025-04-08; source msha-controller-operator-history
- **controller_controls_mine:** Jamie  Dalke et al → Mason Quarry Portable; 2022-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jamie  Dalke et al → Willamette Valley Excavating; 2022-07-15 to 2025-04-08; source msha-controller-operator-history
- **controller_controls_operator:** Brad  Reynoso et al → Willamette Valley Excavating; 2022-07-15 to 2025-04-08; source msha-controller-operator-history
- **operator_operates_mine:** Willamette Valley Aggregates LLC → Mason Quarry Portable; 2025-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jamie  Dalke et al → Mason Quarry Portable; 2025-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jamie  Dalke et al → Willamette Valley Aggregates LLC; 2025-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad  Reynoso et al → Willamette Valley Aggregates LLC; 2025-04-09 to current/open; source msha-controller-operator-history