# Relationship history for MSHA mine 0800885

Current hierarchy: **Flack Lloyd A → Ctc Construction Inc → R O Camp Clay Pit**

- 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:** Ctc Construction Inc → R O Camp Clay Pit; 1978-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Flack Lloyd A → R O Camp Clay Pit; 1978-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Flack Lloyd A → Ctc Construction Inc; 1978-03-09 to current/open; source msha-controller-operator-history