# Relationship history for MSHA mine 4202487

Current hierarchy: **Brad  Haslem → BHI → BHI**

- 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:** A & D Hacking Inc → BHI; 2008-04-10 to 2009-08-16; source msha-controller-operator-history
- **controller_controls_mine:** Brad  Haslem → BHI; 2008-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad  Haslem → A & D Hacking Inc; 2008-04-10 to 2009-08-16; source msha-controller-operator-history
- **operator_operates_mine:** BHI → BHI; 2009-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brad  Haslem → BHI; 2009-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad  Haslem → BHI; 2009-08-17 to current/open; source msha-controller-operator-history