# Relationship history for MSHA mine 0504717

Current hierarchy: **Steve  Baker → 3B Enterprises LLC → 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

- **operator_operates_mine:** 3 B Enterprises → CRUSHER 1; 2001-08-01 to 2008-07-07; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Baker → CRUSHER 1; 2001-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Baker → 3 B Enterprises; 2001-08-01 to 2008-07-07; source msha-controller-operator-history
- **operator_operates_mine:** 3B Enterprises LLC → CRUSHER 1; 2008-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Baker → CRUSHER 1; 2008-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Baker → 3B Enterprises LLC; 2008-07-08 to current/open; source msha-controller-operator-history