# Relationship history for MSHA mine 1601504

Current hierarchy: **Halliburton Company → Halliburton Energy Services Inc → Larose Grinding Plant**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Halliburton Company → Larose Grinding Plant; 1998-02-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Halliburton Energy Services Inc → Larose Grinding Plant; 2010-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Halliburton Company → Halliburton Energy Services Inc; 2010-11-01 to current/open; source msha-controller-operator-history