# Relationship history for MSHA mine 0405939

Current hierarchy: **Archie  Lawyer → Archie Lawyer → Lawyer Borrow Pit**

- 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:** Archie Lawyer → Lawyer Borrow Pit; 2019-06-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Archie  Lawyer → Lawyer Borrow Pit; 2019-06-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Archie  Lawyer → Archie Lawyer; 2019-06-03 to current/open; source msha-controller-operator-history