# Relationship history for MSHA mine 4105442

Current hierarchy: **Joseph A  Thompson; Tommy P  Tutle; Christopher E  Thompson → Cayuga Sand LLC → Cayuga Sand**

- 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:** Cayuga Sand LLC → Cayuga Sand; 2019-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Christopher E  Thompson et al → Cayuga Sand; 2019-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christopher E  Thompson et al → Cayuga Sand LLC; 2019-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph A  Thompson et al → Cayuga Sand LLC; 2019-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tommy P  Tutle et al → Cayuga Sand LLC; 2019-06-06 to current/open; source msha-controller-operator-history