# Relationship history for MSHA mine 1512714

Current hierarchy: **Webb Conley-Edward Pike & Cecil Craft → Conley Webb Housesite → No 1 Site**

- 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

- **operator_operates_mine:** Conley Webb Housesite → No 1 Site; 1981-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Webb Conley-Edward Pike & Cecil Craft → No 1 Site; 1981-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Webb Conley-Edward Pike & Cecil Craft → Conley Webb Housesite; 1981-01-01 to current/open; source msha-controller-operator-history