# Relationship history for MSHA mine 2003584

Current hierarchy: **Christopher S  Michalski → Michalski Excavating LLC → #1**

- 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:** Michalski Excavating LLC → #1; 2019-09-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Christopher S  Michalski → #1; 2019-09-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christopher S  Michalski → Michalski Excavating LLC; 2019-09-04 to current/open; source msha-controller-operator-history