# Relationship history for MSHA mine 3401410

Current hierarchy: **Thomas D  Caward → Caward Rock Products → Caward Rock Products**

- 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:** Conleas → Caward Rock Products; 1983-05-01 to 1983-11-29; source msha-controller-operator-history
- **controller_controls_mine:** Alexander Kent → Caward Rock Products; 1983-05-01 to 1983-11-29; source msha-controller-operator-history
- **controller_controls_operator:** Alexander Kent → Conleas; 1983-05-01 to 1983-11-29; source msha-controller-operator-history
- **operator_operates_mine:** Caward Rock Products → Caward Rock Products; 1983-11-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas D  Caward → Caward Rock Products; 1983-11-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas D  Caward → Caward Rock Products; 1983-11-30 to current/open; source msha-controller-operator-history