# Relationship history for MSHA mine 1002256

Current hierarchy: **Julie  Thompson → Thompson Paving → Archer 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:** Thompson Paving → Archer Pit; 2015-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Julie  Thompson → Archer Pit; 2015-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Julie  Thompson → Thompson Paving; 2015-04-01 to current/open; source msha-controller-operator-history