# Relationship history for MSHA mine 3609774

Current hierarchy: **John A.  Sidari → M & J Excavation Inc. → Crystal Run Bank**

- 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:** John A.  Sidari → Crystal Run Bank; 2008-03-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M & J Excavation Inc. → Crystal Run Bank; 2009-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John A.  Sidari → M & J Excavation Inc.; 2009-06-30 to current/open; source msha-controller-operator-history