# Relationship history for MSHA mine 1515198

Current hierarchy: **Reed Stanley → Sue Ann Coal Company Inc → Clay Co Mining**

- 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:** Reed Stanley → Clay Co Mining; 1984-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sue Ann Coal Company Inc → Clay Co Mining; 1985-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reed Stanley → Sue Ann Coal Company Inc; 1985-05-01 to current/open; source msha-controller-operator-history