# Relationship history for MSHA mine 2601771

Current hierarchy: **Ray Mead → Ray Mead → Green Claims 1-12 Or Green 1-12**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Ray Mead → Green Claims 1-12 Or Green 1-12; 1981-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ray Mead → Green Claims 1-12 Or Green 1-12; 1981-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ray Mead → Ray Mead; 1981-09-01 to current/open; source msha-controller-operator-history