# Relationship history for MSHA mine 3609712

Current hierarchy: **William  Liepinis → BL Quarries LLC → BL Quarries 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Liepinis Stone → BL Quarries LLC; 2009-03-10 to 2013-04-13; source msha-controller-operator-history
- **controller_controls_mine:** William  Liepinis → BL Quarries LLC; 2009-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Liepinis → Liepinis Stone; 2009-03-10 to 2013-04-13; source msha-controller-operator-history
- **controller_controls_mine:** William  Liepinis → BL Quarries LLC; 2011-03-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** BL Quarries LLC → BL Quarries LLC; 2013-04-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Liepinis → BL Quarries LLC; 2013-04-14 to current/open; source msha-controller-operator-history