# Relationship history for MSHA mine 3800720

Current hierarchy: **Ted S  Smith → Piedmont Mining, LLC → Shade 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

- **controller_controls_mine:** Ted S  Smith → Shade Mine; 1993-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Piedmont Mining, LLC → Shade Mine; 2008-04-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ted S  Smith → Piedmont Mining, LLC; 2008-04-17 to current/open; source msha-controller-operator-history