# Relationship history for MSHA mine 3901114

Current hierarchy: **Randy  Brownlee; Rita  Brownlee → Brownlee Construction Inc. → Plant #2**

- 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:** Brownlee Construction Company → Plant #2; 1950-01-01 to 2020-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Brownlee Construction Company → Plant #2; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brownlee Construction Company → Brownlee Construction Company; 1950-01-01 to 2020-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Randy  Brownlee  et al → Plant #2; 1990-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brownlee Construction Inc. → Plant #2; 2020-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Brownlee  et al → Brownlee Construction Inc.; 2020-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rita  Brownlee  et al → Brownlee Construction Inc.; 2020-10-14 to current/open; source msha-controller-operator-history