# Relationship history for MSHA mine 4105853

Current hierarchy: **Michael  Stasney → M Sand Company LLC → Garwood**

- 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:** M Sand Company LLC → Garwood; 2026-02-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Stasney → Garwood; 2026-02-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Stasney → M Sand Company LLC; 2026-02-21 to current/open; source msha-controller-operator-history