# Relationship history for MSHA mine 4300518

Current hierarchy: **Thomas H  Magwire → Magwire Granite Llc → MAGWIRE GRANITE**

- 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:** Magwire Granite Llc → MAGWIRE GRANITE; 1998-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas H  Magwire et al → MAGWIRE GRANITE; 1998-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas H  Magwire et al → Magwire Granite Llc; 1998-09-01 to current/open; source msha-controller-operator-history