# Relationship history for MSHA mine 3901318

Current hierarchy: **Randy  Brownlee; Rita  Brownlee → Brownlee Construction Inc → Brownlee Construction Inc**

- 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

- **controller_controls_mine:** Walter  Brownlee → Brownlee Construction Inc; 1978-03-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brownlee Construction Company → Brownlee Construction Inc; 1985-04-01 to 1990-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Walter  Brownlee → Brownlee Construction Company; 1985-04-01 to 1990-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Brownlee Construction Inc → Brownlee Construction Inc; 1990-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Randy  Brownlee  et al → Brownlee Construction Inc; 1990-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Brownlee  et al → Brownlee Construction Inc; 1990-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rita  Brownlee  et al → Brownlee Construction Inc; 1990-11-01 to current/open; source msha-controller-operator-history