# Relationship history for MSHA mine 1601357

Current hierarchy: **Valence Drilling Fluids Holdings LLC → Valence Drilling Fluids Holdings, LLC → Baramin US, LLC**

- 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:** Baker Hughes Inc → Baramin US, LLC; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Baker Hughes Drilling Fluids → Baramin US, LLC; 1999-12-01 to 2023-06-05; source msha-controller-operator-history
- **controller_controls_operator:** Baker Hughes Inc → Baker Hughes Drilling Fluids; 1999-12-01 to 2023-06-05; source msha-controller-operator-history
- **operator_operates_mine:** Baker Hughes Oilfield Operations LLC → Baramin US, LLC; 2023-06-06 to 2025-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Baker Hughes Holdings LLC → Baramin US, LLC; 2023-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Baker Hughes Holdings LLC → Baker Hughes Oilfield Operations LLC; 2023-06-06 to 2025-06-29; source msha-controller-operator-history
- **operator_operates_mine:** Valence Drilling Fluids Holdings, LLC → Baramin US, LLC; 2025-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Valence Drilling Fluids Holdings LLC → Baramin US, LLC; 2025-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Valence Drilling Fluids Holdings LLC → Valence Drilling Fluids Holdings, LLC; 2025-06-30 to current/open; source msha-controller-operator-history