# Relationship history for MSHA mine 2200466

Current hierarchy: **Randy M  Windham → Smith County Lime Plant → SMITH COUNTY LIME PLANT**

- 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:** Smith County Lime Plant → SMITH COUNTY LIME PLANT; 1978-03-09 to 1999-04-11; source msha-controller-operator-history
- **controller_controls_mine:** Walter  Bass → SMITH COUNTY LIME PLANT; 1978-03-09 to 1999-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Walter  Bass → Smith County Lime Plant; 1978-03-09 to 1999-04-11; source msha-controller-operator-history
- **operator_operates_mine:** Smith County Lime Plant → SMITH COUNTY LIME PLANT; 1999-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Randy M  Windham → SMITH COUNTY LIME PLANT; 1999-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy M  Windham → Smith County Lime Plant; 1999-04-12 to current/open; source msha-controller-operator-history