# Relationship history for MSHA mine 0202309

Current hierarchy: **Sadler Howard → Wesapi → Kingman Crushing**

- 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:** T-P Enterprises Inc → Kingman Crushing; 1986-06-01 to 1988-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Pickrell Terry → Kingman Crushing; 1986-06-01 to 1988-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Pickrell Terry → T-P Enterprises Inc; 1986-06-01 to 1988-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Wesapi → Kingman Crushing; 1988-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sadler Howard → Kingman Crushing; 1988-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sadler Howard → Wesapi; 1988-02-01 to current/open; source msha-controller-operator-history