# Relationship history for MSHA mine 4103043

Current hierarchy: **Allan William N → Allan Construction Company Inc → Project #5**

- 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:** Allan William N → Project #5; 1979-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Allan Construction Company Inc → Project #5; 1980-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Allan William N → Allan Construction Company Inc; 1980-11-01 to current/open; source msha-controller-operator-history