# Relationship history for MSHA mine 3304449

Current hierarchy: **Molly  Johnson → Van Johnson Construction Inc → M J MINE**

- 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:** Van Johnson Construction Inc → M J MINE; 1999-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Molly  Johnson → M J MINE; 1999-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Molly  Johnson → Van Johnson Construction Inc; 1999-11-01 to current/open; source msha-controller-operator-history