# Relationship history for MSHA mine 1511640

Current hierarchy: **West Raymond → Tradewater Farms Inc → Tradewater**

- 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:** Tradewater Farms Inc → Tradewater; 1978-10-01 to 1981-02-25; source msha-controller-operator-history
- **controller_controls_mine:** Conn Terry → Tradewater; 1978-10-01 to 1981-02-25; source msha-controller-operator-history
- **controller_controls_operator:** Conn Terry → Tradewater Farms Inc; 1978-10-01 to 1981-02-25; source msha-controller-operator-history
- **operator_operates_mine:** Tradewater Farms Inc → Tradewater; 1981-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** West Raymond → Tradewater; 1981-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** West Raymond → Tradewater Farms Inc; 1981-02-26 to current/open; source msha-controller-operator-history