# Relationship history for MSHA mine 0401832

Current hierarchy: **Teichert Inc → Santa Fe Aggregates Inc → Kaweah River Rock**

- 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:** Kaweah River Rock Company Inc → Kaweah River Rock; 1950-01-01 to 2009-12-28; source msha-controller-operator-history
- **controller_controls_mine:** John  Alltucker et al → Kaweah River Rock; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Alltucker et al → Kaweah River Rock Company Inc; 1950-01-01 to 2009-12-28; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Alltucker et al → Kaweah River Rock Company Inc; 1950-01-01 to 2009-12-28; source msha-controller-operator-history
- **controller_controls_mine:** Teichert Inc → Kaweah River Rock; 1988-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Santa Fe Aggregates Inc → Kaweah River Rock; 2009-12-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Teichert Inc → Santa Fe Aggregates Inc; 2009-12-29 to current/open; source msha-controller-operator-history