# Relationship history for MSHA mine 2700375

Current hierarchy: **Samuel O  Mick → Mick Construction Corp → Mick Crusher #3**

- 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:** Samuel O  Mick → Mick Crusher #3; 1998-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mick Construction Corp → Mick Crusher #3; 2002-05-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Samuel O  Mick → Mick Construction Corp; 2002-05-23 to current/open; source msha-controller-operator-history