# Relationship history for MSHA mine 4003543

Current hierarchy: **Jennifer  Hobbs etal; Charles  Hobbs etal → Nashville Fabrication LLC → Andy Land 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:** Nashville Fabrication → Andy Land Mine; 2020-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jennifer  Hobbs etal → Andy Land Mine; 2020-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jennifer  Hobbs etal → Nashville Fabrication; 2020-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Hobbs etal → Nashville Fabrication; 2020-10-16 to current/open; source msha-controller-operator-history