# Relationship history for MSHA mine 2601846

Current hierarchy: **Edgar James D → Westbar Mining Company Inc → Horton Property**

- 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:** Westbar Mining Company Inc → Horton Property; 1983-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Edgar James D → Horton Property; 1983-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edgar James D → Westbar Mining Company Inc; 1983-05-01 to current/open; source msha-controller-operator-history