# Relationship history for MSHA mine 2602041

Current hierarchy: **Blaine J  Rees → BJ Rees's Enterprise → Trio Impact Crusher #1370**

- 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:** Blaine J  Rees → Trio Impact Crusher #1370; 1984-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rees'S Enterprise → Trio Impact Crusher #1370; 1988-01-01 to 2012-07-11; source msha-controller-operator-history
- **controller_controls_operator:** Blaine J  Rees → Rees'S Enterprise; 1988-01-01 to 2012-07-11; source msha-controller-operator-history
- **controller_controls_mine:** Blaine J  Rees → Trio Impact Crusher #1370; 2000-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** BJ Rees's Enterprise → Trio Impact Crusher #1370; 2012-07-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blaine J  Rees → BJ Rees's Enterprise; 2012-07-12 to current/open; source msha-controller-operator-history