# Relationship history for MSHA mine 4500964

Current hierarchy: **David G  Freels; Griffin  Freels; Colton  Freels; Chauncy  Freels → Okanogan Valley Concrete, Inc → Okanogan Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Columbia Concrete Products → Okanogan Pit; 1950-01-01 to 1990-05-20; source msha-controller-operator-history
- **controller_controls_mine:** Walter L  Foster → Okanogan Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Walter L  Foster → Columbia Concrete Products; 1950-01-01 to 1990-05-20; source msha-controller-operator-history
- **operator_operates_mine:** Okanogan Valley Concrete, Inc → Okanogan Pit; 1990-05-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Terry  Paslay → Okanogan Pit; 1990-05-21 to 2020-07-30; source msha-controller-operator-history
- **controller_controls_operator:** Terry  Paslay → Okanogan Valley Concrete, Inc; 1990-05-21 to 2020-07-30; source msha-controller-operator-history
- **controller_controls_mine:** Chauncy  Freels et al → Okanogan Pit; 2020-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chauncy  Freels et al → Okanogan Valley Concrete, Inc; 2020-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Griffin  Freels et al → Okanogan Valley Concrete, Inc; 2020-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David G  Freels et al → Okanogan Valley Concrete, Inc; 2020-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Colton  Freels et al → Okanogan Valley Concrete, Inc; 2020-07-31 to current/open; source msha-controller-operator-history