# Relationship history for MSHA mine 4502587

Current hierarchy: **Lucas Jay → Bode'S Ready Mix & Gravel → BODES READY MIX & GRAVEL**

- 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:** Bode'S Ready Mix & Gravel Inc → BODES READY MIX & GRAVEL; 1978-03-09 to 1989-04-26; source msha-controller-operator-history
- **controller_controls_mine:** Herringa Ron → BODES READY MIX & GRAVEL; 1978-03-09 to 1989-04-26; source msha-controller-operator-history
- **controller_controls_operator:** Herringa Ron → Bode'S Ready Mix & Gravel Inc; 1978-03-09 to 1989-04-26; source msha-controller-operator-history
- **operator_operates_mine:** Bode'S Ready Mix & Gravel → BODES READY MIX & GRAVEL; 1989-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lucas Jay → BODES READY MIX & GRAVEL; 1989-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lucas Jay → Bode'S Ready Mix & Gravel; 1989-04-27 to current/open; source msha-controller-operator-history