# Relationship history for MSHA mine 4003598

Current hierarchy: **Blake  Haston → Haston Stone → Moody Quarry**

- 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:** Blake  Haston → Moody Quarry; 2010-04-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Haston Stone → Moody Quarry; 2023-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blake  Haston → Haston Stone; 2023-06-05 to current/open; source msha-controller-operator-history