# Relationship history for MSHA mine 4700143

Current hierarchy: **Willis L  Reindahl → V C Reindahl & Son → V.C. REINDAHL & SON**

- 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:** V C Reindahl & Son → V.C. REINDAHL & SON; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Willis L  Reindahl → V.C. REINDAHL & SON; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Willis L  Reindahl → V C Reindahl & Son; 1950-01-01 to current/open; source msha-controller-operator-history