# Relationship history for MSHA mine 0405713

Current hierarchy: **John  Bremer → Rentrac Inc → Portable Crusher 1**

- 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:** John  Bremer → Portable Crusher 1; 2006-05-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hi-Line Construction Inc → Portable Crusher 1; 2007-02-26 to 2008-08-15; source msha-controller-operator-history
- **controller_controls_mine:** Jerry S  Hanley → Portable Crusher 1; 2007-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry S  Hanley → Hi-Line Construction Inc; 2007-02-26 to 2008-08-15; source msha-controller-operator-history
- **operator_operates_mine:** Rentrac Inc → Portable Crusher 1; 2008-08-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Bremer → Rentrac Inc; 2008-08-16 to current/open; source msha-controller-operator-history