# Relationship history for MSHA mine 0801032

Current hierarchy: **Nolden Robert P → Londen Mining Inc → Monroe Mine #41**

- 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:** Londen Mining Inc → Monroe Mine #41; 1985-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nolden Robert P → Monroe Mine #41; 1985-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nolden Robert P → Londen Mining Inc; 1985-08-01 to current/open; source msha-controller-operator-history