# Relationship history for MSHA mine 2003581

Current hierarchy: **Alan W  McCarty → McCarty Excavating → McCarty Pit**

- 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:** McCarty Excavating → McCarty Pit; 2019-07-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alan W  McCarty → McCarty Pit; 2019-07-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alan W  McCarty → McCarty Excavating; 2019-07-17 to current/open; source msha-controller-operator-history