# Relationship history for MSHA mine 0201264

Current hierarchy: **Beyerle Rupert & William → Beyerle Sand & Gravel Inc → Santa Cruz Pit**

- 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:** River Road Sand & Gravel Ready Mix Inc → Santa Cruz Pit; 1950-01-01 to 1983-10-20; source msha-controller-operator-history
- **controller_controls_mine:** Padilla Manuel Jr Et Al → Santa Cruz Pit; 1950-01-01 to 1983-10-20; source msha-controller-operator-history
- **controller_controls_operator:** Padilla Manuel Jr Et Al → River Road Sand & Gravel Ready Mix Inc; 1950-01-01 to 1983-10-20; source msha-controller-operator-history
- **operator_operates_mine:** Beyerle Sand & Gravel Inc → Santa Cruz Pit; 1983-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Beyerle Rupert & William → Santa Cruz Pit; 1983-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Beyerle Rupert & William → Beyerle Sand & Gravel Inc; 1983-10-21 to current/open; source msha-controller-operator-history