# Relationship history for MSHA mine 0800314

Current hierarchy: **Montsdeoca Fred Y → Green Valley Lime Company Inc → Green Valley Lime Co Marianna Mine**

- 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:** Green Valley Lime Company Inc → Green Valley Lime Co Marianna Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Montsdeoca Fred Y → Green Valley Lime Co Marianna Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Montsdeoca Fred Y → Green Valley Lime Company Inc; 1950-01-01 to current/open; source msha-controller-operator-history