# Relationship history for MSHA mine 1901122

Current hierarchy: **Kathleen M  McIntyre → McINTYRE LOAM INCORPORATED → WALNUT GROVE 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:** McINTYRE LOAM INCORPORATED → WALNUT GROVE PIT; 2003-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas  McIntyre → WALNUT GROVE PIT; 2003-03-10 to 2017-04-22; source msha-controller-operator-history
- **controller_controls_operator:** Thomas  McIntyre → McINTYRE LOAM INCORPORATED; 2003-03-10 to 2017-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Kathleen M  McIntyre → WALNUT GROVE PIT; 2017-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kathleen M  McIntyre → McINTYRE LOAM INCORPORATED; 2017-04-23 to current/open; source msha-controller-operator-history