# Relationship history for MSHA mine 1514405

Current hierarchy: **Pelfrey Corbet & Harold Rose → Pelfrey & Rose → #1 Surface**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Pelfrey Corbet & Harold Rose → #1 Surface; 1979-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pelfrey & Rose → #1 Surface; 1984-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pelfrey Corbet & Harold Rose → Pelfrey & Rose; 1984-01-01 to current/open; source msha-controller-operator-history